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: COLLEGE HODGEPODGE 
Clue: This adjective for a second-year student is defined as "intellectually pretentious", "conceited" & "immature"

A: sophomoric
****
Q: Category: STARRY NIGHT 
Clue: The helix nebula is in this constellation, whose "arm" holds 5 stars suggesting a water pitcher

A: aquarius
****
Q: Category: PARTICLE PHYSICS 
Clue: To get an element's mass number, add its protons & these

A:
neutrons
****