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").
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Question: Which would create the most pollution (A) animals (B) rivers (C) smoke stacks (D) toxicity

Answer: C


Question: You can find ferrous metals in (A) Grass (B) Vehicle scraps (C) Wood (D) Glass

Answer: B


Question: giant walls of froze H2O carved out (A) the great plains (B) the pacific ocean (C) the great lakes (D) the grand canyon

Answer:
C