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.
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Question: Category: HOMOPHONES 
Clue: A plant of the parsley family, or a unit to measure the fineness of gold

Answer: carrot/karat


Question: Category: JEOPARDY! PLACE 
Clue: Teri calls Emily & says she'll bring the baby back if Emily pleads guilty, which would be this, lying under oath

Answer: perjury


Question: Category: TECHNOLOGY 
Clue: First built in 1960, it's also been called an optical maser

Answer:
laser