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.

Category: FRUITS & VEGETABLES 
Clue: This fruit is divided into wine & table groups
grapes

Category: TIME FOR A "CON"TEST 
Clue: Though it possibly dates from the 16th century, the origin of this word for a punny riddle is a mystery in itself
conundrum

Category: WHICH CABINET DEPARTMENT? 
Clue: The Employment & Training Administration

labor