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 can (A) make eyes more visible (B) bounce from a rod (C) create a real problem (D) blind a garden gnome

SOLUTION: B

PROBLEM: Once the grounds frost over and the air grows chilled (A) beaches are opened (B) humans go naked (C) birds lay eggs (D) roses die

SOLUTION: D

PROBLEM: Where's the best place to use water to power a lighthouse? (A) the tundra (B) the ocean (C) the desert (D) the mountains

SOLUTION:
B