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 consistency, answers should be in all lower cased letters.
PROBLEM: Category: THE NEAREST 
Clue: ...of your 4 limbs to your heart is this one

SOLUTION: your left arm

PROBLEM: Category: GREAT BRITS 
Clue: He joined the British navy at age 12 & died at the Battle of Trafalgar 35 years later

SOLUTION: lord nelson

PROBLEM: Category: "OO"!  "OO"! 
Clue: In a nursery rhyme this barnyard cry precedes "My dame has lost her shoe"

SOLUTION:
"cock-a-doodle-doo"