Which sentence contains a nonrestrictive clause and is punctuated correctly?

The answer is A. "Which they loved" is the nonrestrictive clause and it is separated properly through the use of em-dashes.

Letter A is the correct option.

Explanation:

A nonrestrictive clause is understood as an adjective clause that does not give essential information, and because of that, the meaning of the sentence remains the same with or without this clause. The first option has the nonrestrictive clause set off by dashes and not by commas. Also, the meaning of the sentence would not be changed if the clause were not there. In the second sentence, the dash is used to give a different sense to the sentence, indicating the second action to be a little distant from the first one. In the third option, the clause seems to be in parentheses (for all the students) and the meaning of the sentence would change if that clause were not marked as it is. Last option is not correct because nonrestrictive clauses are usually indicated with commas or dashes (as in the first sentence) and this last option lacks these punctuation marks.

explanation:

you only need simple sentences to answer this. just answer these questions.

what do you think annie thinks of the mother? do you think annie believes the mother is a fit mother for helen.

what about the father? what would annie think of him? she might not like him, but does she respect him.

how about the son? would annie think he is the only voice of sanity in an insane place?

what about helen herself? this is the key question. how does she see helen? what do you suppose she thought her first job was going to be.

these aren't hard questions. just state the obvious. annie is not that well educated: she just knows what she has to do. write it that way.

you can do it if you've read the book or seen the play or movie.