The energy source for sperm to swim comes from :

a. fructose sugar in the surrounding seminal fluids added by the seminal vesicles.
b. stored sugar molecules in the sperm head.
c. protein breakdown by mitochondria in the mid-piece of the sperm.
d. stored fat molecules in the acrosome.
e. dissolved lipids in the seminal fluids added by the prostate gland.

The correct option is a: "fructose sugar in the surrounding seminal fluids added by the seminal vesicles."

Explanation:

It takes large amounts of energy for the sperm to be able to swim towards the egg. Fructose is high in energy, which can be released once it is broken down. The seminal vesicles are the structures responsible for producing the fluid that's rich in fructose which will act as an energy source for the sperm. Thus, sperm motility is dependent on the availability of fructose as the carbohydrate that provides an energy source.

Hope that answers the question, have a great day!

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