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: 9-LETTER WORDS 
Clue: Trees that shed their leaves annually are described by this adjective
[A]: deciduous


[Q]: Category: GLAND FINALE 
Clue: This human gland important in the immune system takes its name in part from its resemblance to an herb
[A]: the thymus gland


[Q]: Category: REDUNDANCY & REPETITION 
Clue: It's redundant to refer to this "system of measurement", since the word means "relating to measurement"
[A]:
metric