a compound an element a solution a mixture
I gave my students this multiple choice question: Ben has a snack with a combination of raisins, chocolate pieces, and nuts. As he eats the snack, Ben picks out all of the raisins. Which best describes the snack Ben is eating?

Only one answer is correct among these 4 choices:
- a compound
- an element
- a solution
- a mixture

Could you tell me which one is correct?

a mixture