Answer:
the movements of sperm cells.
Explanation:
The period in which humans are able to reproduce is marked by the development of <span>secondary sex characteristics. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has actually come to your great help.</span>
THE RA ER ICU IM JUST QUOTING GREAYS ANATOMY IDK
The correct answer would be C
