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

Answer: serve


Question: Category: MOTHER GOOSE 
Clue: It's the type of nail referred to in the nursery rhyme "All for Want of a Nail"

Answer: a horseshoe nail


Question: Category: WHAT'S THE PITCH? 
Clue: "You deserve a break today"

Answer:
mcdonald\'s