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: THE DIGESTIVE SYSTEM 
Clue: Gravity isn't required to move food down to your stomach; this process moves it down the esophagus

Answer: peristalsis


Question: Category: SPORTS SCORES 
Clue: In volleyball, only the side who did this at the beginning of play can score a point

Answer: serve


Question: Category: WANNA BET? 
Clue: In this game a don't pass bet is a wager against the shooter

Answer:
craps