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: A glacier moved through an area years and years ago, and scientists can tell this by (A) looking at the moon (B) looking at the dogs (C) looking at the sky conditions (D) glancing at nearby stone

SOLUTION: D

PROBLEM: Nerves are used to feel what on the skin? (A) creativity (B) stares (C) emotions (D) coldness

SOLUTION: D

PROBLEM: heat and pressure change the remains of what into natural gas? (A) leaves (B) cans (C) books (D) cars

SOLUTION:
A