Question

during which life stage do poeple generally reach peak bone mass, after which they begin to lose bone mass?
a childhood (ages 4-8)
b adolescence (ages 9-18)
c young adulthood (age 19-30)
d middle adulthood (ages 31-50)
e older adulthood (ages 51+)

Explanation:

Bone mass accumulates throughout childhood and adolescence and typically reaches its peak during young adulthood (ages 19 - 30). After this stage, bone - mass loss can gradually occur.

Answer:

C. Young adulthood (age 19-30)