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: SCIENCE "T"ALK 
Clue: It's what the "t" stands for in tRNA

A: transfer
****
Q: Category: BORDERS 
Clue: Argentina's border with this country is 3,200 miles long, about the same as its coastline

A: chile
****
Q: Category: MOUNTAINS 
Clue: The Georgian Military Highway is the only highway crossing this range that divides Asia from Europe

A:
caucuses
****