Which Sentence Contains A Comma Splice

Which sentence contains a comma splice? This question often appears in writing workshops, grammar quizzes, and standardized tests because recognizing a comma splice is a fundamental skill for clear, effective communication. A comma splice occurs when two independent clauses are joined only by a comma, without a coordinating conjunction or stronger punctuation. Understanding how to spot and correct this error improves readability and demonstrates a strong command of English punctuation.

Understanding Comma Splices

An independent clause is a group of words that can stand alone as a sentence because it contains a subject and a verb and expresses a complete thought. When two such clauses appear back‑to‑back, the writer must use appropriate punctuation to signal the break. If only a comma is placed between them, the result is a comma splice—a type of run‑on sentence that is considered nonstandard in formal writing.

Why Comma Splices Matter

Clarity: Readers may pause incorrectly, causing confusion about where one idea ends and the next begins.
Credibility: Frequent punctuation errors can undermine the writer’s authority, especially in academic or professional contexts.
Flow: Proper punctuation guides the reader’s rhythm, making the text smoother and more engaging.

Identifying a Comma Splice

To answer the question “which sentence contains a comma splice?” you need to examine each candidate sentence for two independent clauses linked solely by a comma. Below are illustrative examples, with the problematic comma highlighted.

Sentence	Analysis	Contains a Comma Splice?
She loves hiking, she goes to the mountains every weekend.	Two independent clauses: “She loves hiking.” and “She goes to the mountains every weekend.” Joined only by a comma.	Yes
The experiment succeeded, however, the results were unexpected.	“The experiment succeeded.” and “The results were unexpected.” are independent; the comma after succeeded creates a splice, while however is a conjunctive adverb that needs a semicolon or period before it.	Yes
After the rain stopped, the children went outside to play.	Only one independent clause (“the children went outside to play”); the first part is a dependent clause.	No
I wanted to buy the book, but it was out of stock.	Two independent clauses joined by a comma and the coordinating conjunction but. This is correct punctuation.	No
The cat slept on the windowsill; it purred softly.	Two independent clauses joined by a semicolon, which is acceptable.	No

From the table, the first and second sentences answer the question “which sentence contains a comma splice?” because they link two complete thoughts with only a comma.

Quick Test for a Comma Splice

Locate the comma in question.
Ask: Does the text before the comma form a complete sentence? 3. Ask: Does the text after the comma form a complete sentence?
If both answers are yes and there is no coordinating conjunction (for, and, nor, but, or, yet, so) immediately after the comma, you have a comma splice.

Common Mistakes That Lead to Comma Splices

Understanding why writers fall into this trap helps avoid it in the future.

Misusing conjunctive adverbs: Words like however, therefore, nevertheless, and consequently often follow a comma when they should be preceded by a semicolon or period.
- Incorrect: She was tired, however she finished the report.
- Correct: She was tired; however, she finished the report.
Overreliance on the comma as a “pause” marker: Some writers insert a comma wherever they feel a natural pause, forgetting that not all pauses warrant a comma.
Confusing lists with clauses: In a series, commas separate items, but when the items themselves are full sentences, stronger punctuation is needed.
- Incorrect: We arrived early, we found good seats, we enjoyed the show.
- Correct: We arrived early; we found good seats; we enjoyed the show.
Assuming “and” or “but” are optional: Dropping the coordinating conjunction after a comma creates a splice.
- Incorrect: He wanted to leave, he stayed to help.
- Correct: He wanted to leave, but he stayed to help. ## How to Fix a Comma Splice

Once you’ve identified a comma splice, you have several reliable strategies to repair it. Choose the option that best matches the tone and rhythm you desire.

1. Add a Coordinating Conjunction

Insert for, and, nor, but, or, yet, so after the comma.

Before: The road was icy, we drove slowly.
After: The road was icy, and we drove slowly.

2. Replace the Comma with a Semicolon

Use a semicolon when the two clauses are closely related and no conjunction is needed.

Before: She finished her thesis, she celebrated with friends.
After: She finished her thesis; she celebrated with friends.

3. Use a Period to Create Two Sentences

When the ideas are distinct enough to stand alone, a period provides the clearest break.

Before: The team practiced daily, they won the championship.
After: The team practiced daily. They won the championship.

4. Restructure with a Subordinating Conjunction

Turn one independent clause into a dependent clause by adding a subordinating conjunction (because, although, since, while, if, etc.).

Before: He was late, he missed the bus.
After: Because he was late, he missed the bus.

5. Use a Colon for Emphasis or Explanation

If the second clause explains or illustrates the first, a colon works well.

Before: She had one goal, to win the gold medal.
After: She had one goal: to win the gold medal.

6. Employ a Dash for a Strong Break

An em dash can signal a sudden shift or add dramatic effect.

Before: The results were surprising, they contradicted the hypothesis.
After: The results were surprising — they contradicted the hypothesis.

Practice Exercises

Apply what you’ve learned by identifying and correcting the comma splices below. Answers follow each set.

Exercise 1 – Identify the Splice

Which sentence contains a comma splice

A comma splice occurs when two independent clauses are joined by only a comma, without a coordinating conjunction or proper punctuation. For example:

Incorrect: She loves to read, he prefers to watch movies.
Correct: She loves to read, but he prefers to watch movies.

By recognizing and fixing comma splices, your writing becomes clearer and more professional. Practice identifying and correcting them to strengthen your grammar skills.

Mastering these techniques transforms comma splices from a frequent error into a deliberate stylistic choice. The key is recognizing that two complete thoughts demand more than a comma to connect them. Whether you opt for the clarity of a period, the elegance of a semicolon, or the nuance of a subordinating conjunction, each method serves a specific purpose in shaping your sentence’s flow and emphasis.

Consistent practice will make these corrections instinctive. As you revise your work, scan for that telltale pattern: a subject-verb pair, a comma, and then another subject-verb pair. Pause and ask yourself how the ideas relate. Are they equally important? Is one explaining the other? The answer will guide you to the most effective fix.

Ultimately, attending to comma splices is about respecting the architecture of your sentences. It’s a small discipline that yields significant returns in precision, authority, and readability. Your readers will notice the difference, even if they can’t name the rule you’ve applied. By choosing the correct punctuation, you build trust in your message and refine your unique voice as a writer.