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.
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Question: Category: SUPREMES 
Clue: He was supreme commander of Allied forces in Europe, & later of NATO forces

Answer: dwight d. eisenhower


Question: Category: HEY, J.J.! 
Clue: In 2001 his change of political affiliation tipped the balance of power in the Senate

Answer: jim jeffords


Question: Category: BIOLOGY 
Clue: Carrots are examples of these main roots that may have smaller roots branching from them

Answer:
tap roots