Definition:Sentence fragments are groups of words that look like sentences, but aren't.
Example:Which is why I cried.
This sentence could be corrected by removing "which is why." The sentence "I cried." is a complete sentence. I is the subject, cried is the action.The sentence could also be corrected by joining it with an independent clause. I was sad, which is why I cried.
Answer: I think it's "he wants students to feel comfortable when they're in his office." (A?)
Explanation:
