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: Northern countries have extensive erosion due to (A) glacial liquification (B) cola mining (C) more frequent tornadoes (D) meteors

SOLUTION: A

PROBLEM: Riding a two wheeled human powered vehicle is good for the environment because (A) it runs without fuel (B) it helps people stay in shape (C) they are cheaper to maintain (D) they are more fun to drive

SOLUTION: A

PROBLEM: Viewing stars is made easier by (A) technology that uses electromagnetic induction (B) technology that collects electromagnetic radiation (C) technology that picks up sound in space (D) technology that transforms kinetic energy

SOLUTION:
B