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.

Category: "T.W." 
Clue: You might have learned to ride your bike with the help of these attachments
training wheels

Category: ASTROLOGY TIME 
Clue: Considered the first sign of the zodiac, it's often represented by a ram
aries

Category: WATER TASTE-OFF 
Clue: Nothing else has the roundness & finish of this PepsiCo product

aquafina