Answer:
Your body needs MORE calories than when you were a child.
Explanation:
Calorie needs vary depending on age, sex, height and activity level. <em>Calorie needs are often higher during the teenage years than any other time of life.</em> During this period of rapid growth and development, boys require an average of 2,800 calories a day, while girls require an average of 2,200 calories a day.
It's definitely letter A. Mononucleosis
Increased amount of nitrogen waste