The answer is: "dopamine" .
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Option A, B, D are only applicable for steroid hormones ( hydrophobic)
So the answer is C
Once the sperm cells are formed, the are stored in the epididymis, where they are temporarily stored while they mature.
Hope this helps :)
Answer:
if sex cells were identical, there won't be genetics variations and we will just all be identical to our parents. genetic variation allows us to better adapt and survive
Answer - Theory
Reasoning - Your best bet and term to describe the evolution by natural selection is theory as to still scientific theory/research is still ongoing and changes can be made in a different direction.