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: The producer makes its own: (A) body (B) sustenance (C) air (D) grass

SOLUTION: B

PROBLEM: Which is nonmagnetic? (A) nail (B) washing machine (C) traffic cone (D) refrigerator

SOLUTION: C

PROBLEM: What might occur during an experiment (A) severe oxygen depletion in the atmosphere (B) layers of the ozone disintegrating (C) midterm exams for math class (D) solution overflowing from a beaker

SOLUTION:
D