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.

Category: CARS 
Clue: This international automaker opened a U.S. plant in 1978 to build Rabbits
volkswagen

Category: THE GENTLE ART OF RUGBY 
Clue: This position is the last line of defense; in the NFL it's the offensive role of Larry Csonka & Moose Johnston
the fullback

Category: I READ IT IN A BOOK ONCE 
Clue: "His lips parted into a timid smile, and our neighbor's image blurred with my sudden tears.  'Hey, Boo,' I said"

to kill a mockingbird