You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Q: Category: HOUSEPLANTS 
Clue: Roots sticking through drainage holes in containers are a sign that it's time to do this

A: re-pot
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Q: Category: UNDER THE "C" 
Clue: Cheese is this part of milk separated from the whey

A: the curd
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Q: Category: MYTHOLOGICAL RHYME TIME 
Clue: Rainbow goddess' disease-spreading particles

A:
iris\' viruses
****