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.

[EX Q]: Category: FROM HERE TO MATERNITY 
Clue: This French doctor called his childbirth preparation method psychoprophylaxis:  mental prevention
[EX A]: fernand lamaze

[EX Q]: Category: WORLD RELIGION 
Clue: Inti was the sun god prayed to by the ruling family of this South American empire
[EX A]: incas

[EX Q]: Category: SCIENCE 
Clue: This yellow element is found in gunpowder & matches & is used in vulcanizing rubber
[EX A]:
sulphur