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

[EX Q]: Category: SCIENCE 
Clue: What you're "stuck with" boiling down collagen, softening it with hot water & letting it swell
[EX A]: glue

[EX Q]: Category: LITTLE-USED WORDS 
Clue: A malison is a curse; a benison is this
[EX A]:
a blessing