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: In the desert it was harder to find a (A) stream (B) cactus (C) dry bed (D) canyon

SOLUTION: A

PROBLEM: if a chemical reaction occurs, it might have been triggered by which of these? (A) a person yelling at it (B) a person walking by it (C) a person looking at it intently (D) a person cranking up the room heater

SOLUTION: D

PROBLEM: When you scream in an empty room, you hear an echo due to the noise (A) eating (B) bouncing a ball (C) nothing (D) bouncing off stuff

SOLUTION:
D