The answer could be (spread), but there isn't much to go on here
It is body composition! Np Welcome :P
Answer:
the answer would be B. Digestive system, Muscular system, endocrine system, nervous system
<span>Men can produce sperm throughout their adulthood because their reproductive organs and glands are fully developed. During their childhood and adolescence the glands and organs are not functional for reproductive purposes.</span>
<span>I believe it is because, convection currents are increased by the latent energy of condensation.
I hope this helps!</span>