Question

If you wanted to study the changes that occur as the reproductive system begins to function, you would need a person in which stage of life?

A) Adolescence
B) Adulthood
C) Infancy
D) Childhood

Answer 1

Adolescence I think

Answer 2

I agree with the person above - if you wanted to study the changes that occur as the reproductive system begins to function, you would need a person in A. adolescence.
This is a period when most of the changes regarding the reproductive, but also other bodily systems begin to appear.