Q: 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.
Category: CHARITABLE WORK 
Clue: Musician Ray Charles raised money for people afflicted by this, saying, "To me, it's the worst thing in the world"
A:
deafness