Hypertrophy is a type of: (A) Cell injury, (B) Cellular adaptation, (C) Carcinoma, (D) Cell aging
Answer is B. Physiological adaptive responses include: 

Hypertrophy - increase in cell size 
Hyperplasia - increase in the number of cells 
Atrophy - decrease in cell size and number 
Metaplasia - reversible replacement of one cell type by another differentiated cell type