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: An example of conservation is (A) jogging (B) reducing ethanol use (C) hiking (D) raking leaves

SOLUTION: B

PROBLEM: Quartz can very easily damage (A) smelted silica (B) granite (C) diamonds (D) steel

SOLUTION: A

PROBLEM: Which are likeliest to repel one another? (A) two mighty oak trees (B) two ice cream cones (C) two pieces of silverware (D) two bottles of water

SOLUTION:
C