Question

a fracture is a _______ in the bone. it can occur from either a quick, one - time injury to the bone, or from repeated _______ inflicted on the bone over time
a. break; impact
b. crack; stress
c. break; stress
d. crack; impact

Explanation:

A fracture is defined as a break in the bone. Stress fractures occur due to repeated stress on the bone over time, while a one - time injury can also cause a break. "Crack" is less commonly used to define a fracture in medical terminology compared to "break". "Impact" is more related to a single force, while "stress" is related to repeated force application which is relevant for the second blank.

Answer:

C. break; stress