TASK DEFINITION: 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.
PROBLEM: Category: AROUND THE U.S.A. 
Clue: Any Texan can tell you that this city is "Big D"

SOLUTION: dallas

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

SOLUTION: serve

PROBLEM: Category: WHEN LIFE GIVES YOU LEMONS 
Clue: Make lemonade, add an equal amount of iced tea & you'll have this drink named for a golfer

SOLUTION:
an arnold palmer