Answer:
B. Fats
Step-by-step explanation:
Infants and toddlers younger than 2 years of age need "fats" in their diets for growth, organ protection, and central nervous system development. Fats are deposited in adipose tissues which in turn serve to cushion many delicate organs of body as well as take part in growth. The cells of central nervous system also need fats as an insulator covering.