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: THE UNITED NATIONS 
Clue: In 1971 this future secretary-general was a candidate for the presidency of Austria
[A]: kurt waldheim


[Q]: Category: THE ELEMENTS 
Clue: Most fluorescent lights are filled with a combination of argon & this element, Kr
[A]: krypton


[Q]: Category: BEGINS & ENDS IN "D" 
Clue: A feat or exploit; usually a praiseworthy act
[A]:
a deed