"Apple juice" is singular, so "drink". Plural: "Apple juice and grape juice are kinds of drinks."

The first one is correct. Because "Apple juice" is singular, "drink" (also singular) would be the correct answer. Hope this helps Mia.^^

Hello MIa, it's a drink, single form. Make few examples now below to get it clear.

Apple juice is a kind of drink - is correct

Drink