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: ACTORS & ACTRESSES 
Clue: This violet-eyed beauty was 12 years old when she starred in "National Velvet" in 1944

SOLUTION: elizabeth taylor

PROBLEM: Category: THE PROM QUEEN 
Clue: The prom queen was glad that Mrs. Marcus, her favorite teacher, acted as one of these supervisors at the dance

SOLUTION: a chaperon

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

SOLUTION:
oyster