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.
--------
Question: Category: "M.C." 5 
Clue: Edgar Degas' style influenced that of this female American Impressionist

Answer: mary cassatt


Question: Category: NONFICTION 
Clue: This minister's "The Purpose-Driven Life" was the top nonfiction bestseller of both 2003 & 2004

Answer: rick warren


Question: Category: BIOLOGY 
Clue: In an apple, it's the "inside" name for the pericarp

Answer:
the core