1. Mrs. Smith is seventy-nine. You would expect her skin to be: A. Thick and tough from years of use.
B. Soft from the extra oil older people produce.
C. Dry, thin and wrinkled from age.
D. Pretty much the same as it was when she was fifty.

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar