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").

Q: which of these people would be most susceptible to disease? (A) a person with a healthy white blood cell (B) a person with optimal conditions (C) a person with a weak white blood cell (D) an athlete with a clean bill of health

A: C
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Q: Drinking cola daily removes layers from the surface of (A) enamel on molars (B) spoons (C) porcelain (D) the coffee pot

A: A
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Q: What is often brackish in an estuary? (A) water wheels (B) fish (C) air (D) h2o

A:
D
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