Which choice completes the text so that it conforms to the conventions of Standard English?

Question

My ____ loves to play chess.

Accepted Answer

A. cousin, who is ten,. "who is ten" is extra information about the cousin and takes a comma on each side.

Answer

B. cousin who is ten, — The first comma is missing.

Answer

C. cousin, who is ten — The second comma is missing.

Answer

D. cousin who is ten — Both commas are missing.

Standard English Conventions practice question