Write a correct answer to the given question based on its associated fact. Make sure that your answer is contained in the associated fact. Don't be creative and introduce any new word that is not mentioned in the associated fact! Remember that the associated fact has been rearranged to form the question. So, the correct answer words must lie within the associated fact. The correct answer can be a word, phrase, or even a sentence.

Q: Fact: fruits require sunlight to grow. 
Question: What requires sunlight to grow?

A: Fruits.
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Q: Fact: cell division is how humans grow and repair themselves. 
Question: what uses cell division to grow and repair themselves?

A: humans.
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Q: Fact: the expulsion of semen occurs when muscle contractions propel sperm from the epididymes. 
Question: The expulsion of semen occurs when what propels sperm from the epididymes?

A:
muscle contractions.
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