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]: Plants derive what from soil? (A) pollination and germination (B) life sustaining substances (C) roots and oxygen (D) oxygen and argon
[EX A]: B

[EX Q]: Sliding off concrete and onto gravel produces higher levels of (A) shine (B) value (C) longevity (D) chafing
[EX A]: D

[EX Q]: High can be visually represented by (A) valleys (B) mountains (C) basins (D) deep sea
[EX A]:
B