Answer:
It's the third one.
J'adore mettre du beurre sur mes tartines.
11:22
13:20
9:50
8:14
10:36
9:46
8:18
9:00
9:04
12:34
12:38
10:32
7:30
11:18
You would use the word "aquatic" as an adjective in a sentence when you want to describe something as pertaining to water since "aquatic" when used as an adjective means "relating to water."