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: ALL ABOUT TROMBONES 
Clue: The most common trombone bears the name of this male singing voice

SOLUTION: tenor

PROBLEM: Category: ORGANIZATIONS 
Clue: This service "Club" has a 4-way test of things they think, say & do, including "Will it be beneficial to all concerned?"

SOLUTION: the rotary club

PROBLEM: Category: CORRUPTION JUNCTION 
Clue: In 32 years of one-man rule, President Mobutu looted Zaire, now the Democratic Republic of this

SOLUTION:
congo