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: MARK ANTONYMS 
Clue: The traditional mark of someone who can't sign his name has this opposite in tic-tac-toe

A: o
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Q: Category: POLITICS 
Clue: In 1958 he became the first Democrat elected by popular vote to the U.S. Senate from Maine

A: edmund muskie
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Q: Category: POT LUCK 
Clue: From the French for "disguise", it's used by the military for concealing people or things from the enemy

A:
camouflage
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