Question

http://prntscr.com/6ulghk

Answer 1

@Riley233

Answer 2

@DullJackel09

Answer 3

@kevindragonlord -.- @KendrickLamar2014

Answer 4

@DeadLies

Answer 5

"Behavioral thermoregulation occurs when a fish actively seeks out areas of water with higher or lower temperature. For instance juveniles of the Bear Lake Sculpin (Cottus extensus) live at the bottom of lakes feeding on the lake floor during the day. Here the temperature is normally around 5°C, however after dark they stop feeding and rise to he surface where they hang around digesting their food. The temperature near the surface of the lake is about 14°C. By doing this they are able to digest much more food during the night than they could have done by staying on the lake bottom and so they can grow more quickly."
( http://www.earthlife.net/fish/tregulate.html)

So, in short, I'd go with A.