Concept:The sentence needs a preposition that means "in addition to" or "apart from".
Explanation:The correct word must ask about sports played along with hockey.
"Beside" means "next to", so it is not appropriate here.
"Besides" means "in addition to" or "apart from".
Therefore, the sentence becomes: "What other sport do you play besides hockey?"
"Instead" means "as a substitute for", which contradicts the word "other".
"Expect" is a verb, not a preposition, so it is grammatically incorrect.
Answer:Option B: besides.