TASK DEFINITION: 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").
PROBLEM: What becomes smoother through weathering? (A) rainbow (B) water (C) cat (D) pumice

SOLUTION: D

PROBLEM: Who is most likely to die of old age? (A) adults (B) children (C) infants (D) reasonable high-school students

SOLUTION: A

PROBLEM: As wolves need more energy to catch fast prey (A) their pulse will decrease (B) their shoes will wear out (C) their heart rates will go higher (D) they will start using vehicles to chase their prey

SOLUTION:
C