시험지 정답 확인: food (c)에 들어갈 단어는?

Purple potatoes, orange eggplants, sweet white tomatoes. If you have not heard of them, you are not alone. Biological diversity is being lost around the planet at an alarming rate. But those losses are not happening only in sensitive ecosystems; they have been happening for generations on grocery store shelves. Yes, cabbage comes in green and purple. But how often have you seen red purple carrots or striped tomatoes? Our food (c) have been shrinking steadily for decades. According to the Seed Savers Exchange, Americans grew 7,000 named apple varieties at the turn of the last century; only 10 percent of those are available today.
(c)에 들어갈 단어는 choices라고 합니다. 저는 colors라고 답했는데 틀린 게 맞나요?