Which condition is related to an increase in the size and number of fat cells in the body?

a. hypertension

b. hypercellular obesity

c. hyperplasia

d. hypertrophic obesity

The correct answer should be d. hypertrophic obesity

However, a more correct answer would be a combination of C and D because the hypertrophic type is when obesity occurs due to an increase in the size while hyperplastic is when their number increases. Since it's only mentioned here as hyperplasia, only hypertrophic should be the answer.