Which sentence uses commas correctly with a nonrestrictive clause?

A My sister who lives in Boston is visiting.

B My sister, who lives in Boston, is visiting.

C My sister who lives in Boston, is visiting.

D My sister, who lives in Boston is visiting.

✓ Correct Answer: Option B

Nonrestrictive clauses (additional, non-essential info) are set off by commas on both sides.

💡 Why is B) the correct answer?

The correct answer to the question "Which sentence uses commas correctly with a nonrestrictive clause?" is Option B: My sister, who lives in Boston, is visiting..

The other options — A) My sister who lives in Boston is visiting., C) My sister who lives in Boston, is visiting., D) My sister, who lives in Boston is visiting. — are incorrect for this ACT Exam Prep question. As explained above: Nonrestrictive clauses (additional, non-essential info) are set off by commas on both sides.

📚 About This ACT Exam Prep Practice Question

This 3-level ACT Exam Prep question from the English topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free ACT Exam Prep practice test or use flashcards for spaced repetition review.

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Which sentence uses commas correctly with a nonrestrictive clause?

✓ Correct Answer: Option B

📚 About This ACT Exam Prep Practice Question

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