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.

Q: Category: SUN 
Clue: In the main reaction making the sun's energy, 2 of these nuclear particles fuse & one becomes a neutron

A: protons
****
Q: Category: I NEED "HOPE" 
Clue: It weighs 45.52 carats

A: the hope diamond
****
Q: Category: NOM DE PLUME 
Clue: Under this name, Charles Dodgson imagined traveling down the rabbit hole with Alice

A:
lewis carroll
****