In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

The population of rabbits in an area increases. That could have been caused by (A) More predators have been moving into the area (B) The rabbits are becoming infertile (C) Hunters are trapping the rabbits (D) More precipitation falling lately
D

What will air usually do when heated up beyond a certain point? (A) it will fall (B) it will remain (C) it will ascend (D) it will die
C

Sunlight is a source of (A) wind energy (B) warmth (C) frigid temperatures (D) moonlight

B