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").

[Q]: if a river ran through a region, what would be found close by? (A) land mass susceptible to water encroachment (B) active life coral reef (C) acid rain susceptible area (D) very active volcanic mountains
[A]: A


[Q]: something in a cold place becomes what? (A) warmish (B) toasty (C) hot (D) chilly
[A]: D


[Q]: An arid region has very little (A) rocks (B) heat (C) food (D) sand
[A]:
C