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.

Q: Category: THE U.S. CONGRESS 
Clue: Frustrated with his own political party, in 2001 this senator from Vermont switched to indepedent

A: jeffords
****
Q: Category: 3-LETTER WORDS 
Clue: To udderly intimidate someone

A: cow
****
Q: Category: PURPLE HAZE 
Clue: A deficiency of this vitamin cuts down on your production of visual purple & may lead to night blindness

A:
vitamin a
****