The first paragraph mainly discusses ______.

* Hướng dẫn giải

Chọn C

Thông tin ở 3 câu đầu tiên đoạn đầu: “Human Nutrition is the study of how food affects the health and survival of the human body. Human beings require food to grow, reproduce, and maintain good health. Without food, our bodies could not stay warm, build or repair tissue, or maintain the heartbeat.”