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 consistency, answers should be in all lower cased letters.
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Question: Category: OH "BOY" 
Clue: Slang term for an American infantryman of WWI

Answer: doughboy


Question: Category: THEY USED TO BE CHEERLEADERS 
Clue: This ex-Eastern Regional High cheerleader must have let out a cheer when she became Regis Philbin's co-host

Answer: kelly ripa


Question: Category: Y TO K 
Clue: You don't have to go to great lengths to use one of these, just 3 feet

Answer:
yardstick