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]: The producer makes its own: (A) body (B) sustenance (C) air (D) grass
[EX A]: B

[EX Q]: A ship navigates with a magnetic compass because it is (A) unpredictable (B) waterproof (C) tradition (D) predictable
[EX A]: D

[EX Q]: Hypothermia will set in under which conditions: (A) while exposed to harsh winds in a polar region (B) while stranded deep in a swap (C) while swimming in tropical seas. (D) while exposed to direct sunlight on a tropical island
[EX A]:
A