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: Which of the following is never an element used to make carbohydrates for the plant? (A) sand (B) water (C) sunlight (D) carbon dioxide

SOLUTION: A

PROBLEM: When I hear news of a warm front I make sure to bring (A) game boy (B) clocks (C) guns (D) waterproof appendage covers

SOLUTION: D

PROBLEM: A species' habitat is those places where it can find food, shelter, protection and (A) predators to escape (B) rivers to cross (C) mountains to climb (D) mates for reproduction

SOLUTION:
D