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.

[EX Q]: Category: NERDS RULE! 
Clue: Mick Jagger was a finance student at the London School of Economics before cashing in with this band
[EX A]: the rolling stones

[EX Q]: Category: MADISON 
Clue: As you can guess, Madison's annual Jingle Bell Run has hearty souls running 5 or 10k during this month
[EX A]: december

[EX Q]: Category: BIOLOGY 
Clue: You win a prize if you give us this term for an organ's shrinkage due to lack of use
[EX A]:
atrophy