The best way to describe a human sperm cell is a tad pole (Baby frog). Like the sperm cell the tad pole has a head, body and a tail. Though tad poles are finished products, the sperm cell needs to combine with the egg cell for it to be fertilized.
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Your answer would be A. Sacrificing energy.
Being demanding of others' time is not an attractive thing. You become too dominant and controlling. Being critical of others is rude, and many people wouldn't want to be your friend. Losing a sense of identity is bad for yourself. It can lower your self esteem, and negatively affect your mental health.
So, with that explanation, the most reasonable answer would be A.
The answer is c
Hope this helps