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 simplicity, answers should be in all lower cased letters.
PROBLEM: Category: ISLANDS 
Clue: Delos, the smallest of this country's Cyclades Islands, was a shrine to Apollo in ancient times

SOLUTION: greece

PROBLEM: Category: "O" YOU ANIMAL! 
Clue: It "coughs" out sediment by clapping its shell shut

SOLUTION: oyster

PROBLEM: Category: ON "Q" 
Clue: A trivial objection

SOLUTION:
quibble