Problem 10 - Olympiad

Which sentence uses a non-restrictive clause correctly?

A. My brother who lives in Canada is visiting.B. My brother, who lives in Canada, is visiting.C. My brother who lives in Canada is visiting tomorrow.D. My brother who lives in Canada.

Correct: B

Commas set off the non-restrictive clause 'who lives in Canada' because it adds extra information rather than identifying which brother.