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").

[EX Q]: Pulse accelerates (A) when cooling down after a work out (B) when running pace increases (C) when running pace slows (D) when entering into a sleep state
[EX A]: B

[EX Q]: an area of low-lying ground near to a river is at risk of (A) over fishing (B) balloon landings (C) droughts (D) H20 accumulation
[EX A]: D

[EX Q]: Perspiration leaving the torso through evaporation helps (A) quench it's thirst (B) heat it up (C) cool it down (D) wash it off
[EX A]:
C