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]: 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
[EX A]: A

[EX Q]: People can touch something to see if it's (A) shiny (B) red (C) striped (D) wrinkled
[EX A]: D

[EX Q]: if the boiling point of water is attained, what ensues beyond this point? (A) the water turns evaporates rapidly (B) the water then solidifies (C) the water becomes black (D) all of these
[EX A]:
A