Which of the following sentences includes a correctly punctuated nonrestrictive phrase?

Question

answers:

I asked my best friend, who has a great taste in books, for a recommendation

I asked my best friend who has a great taste in books for a recommendation

I asked my best friend, who has a great taste in books for a recommendation

I asked my best friend ; who has a great taste in books; for a recommendation

Answer 1

The correct sentence that includes a correctly punctuated nonrestrictive phrase is:

"I asked my best friend, who has a great taste in books, for a recommendation."

In this sentence, the nonrestrictive phrase "who has a great taste in books" is correctly set off by commas.