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: Sunlight is a source of (A) wind energy (B) warmth (C) frigid temperatures (D) moonlight

SOLUTION: B

PROBLEM: What is the best example of a live birth? (A) a fish laying a clutch (B) a platypus warming an egg with its furry body until a baby is born (C) a bird warming the eggs in her nest until they hatch (D) a koala delivering into her pouch

SOLUTION: D

PROBLEM: Sunlight is a source of light from what? (A) local star (B) moonbeam (C) lamps (D) lightbulbs

SOLUTION:
A