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: A lack of water has a direct connection on the amount of available (A) shelters (B) sustenance (C) rainy days (D) mates

SOLUTION: B

PROBLEM: When the old man was much younger, he still had (A) brown eyes (B) baldness (C) gray hair (D) wrinkled skin

SOLUTION: A

PROBLEM: What scratches glass easily? (A) a rubber pencil eraser (B) a crystal that regulates electronic oscillators in watches (C) a soft linen towel (D) a round piece of ice

SOLUTION:
B