Question 7: Alaska, ………… my brother lives, is the largest state in the United States.

Option A “Which” replaces the noun of the object, the subject or the object in the relative clause. Structure: N (thing) + WHICH + V + O; N (thing) + WHICH + S + DRAW

Option C “Who” replaces the noun indicating the owner of the word in the relative clause. Structure: N (person)+ WHO + V + O

Answer D is not suitable

“Where” replaces place words, often instead of “there”: N (place) + WHERE + S + V (WHERE = ON/ IN / AT + WHICH)

Alaska, where my brother lives, is the largest state in America.