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: Humans contribute to environmental pollution (A) by purchasing products made from recycled products (B) by switching to energy efficient appliances (C) by leaving behind refuse on public beaches (D) by frequently recycling paper and plastic

SOLUTION: C

PROBLEM: The topography of our only natural satellite's surface is (A) smooth (B) made of cheese (C) full of gold (D) mountainous

SOLUTION: D

PROBLEM: What material can be used to transmit power to a light bulb? (A) plastic (B) metal (C) wood (D) cloth

SOLUTION:
B