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: something in a cold place becomes what? (A) warmish (B) toasty (C) hot (D) chilly

A: D
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Q: What is a source of oxygen through photosynthesis? (A) lakes (B) car engines (C) sunflowers (D) people

A: C
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Q: An example of combining two substances is (A) pouring queso into guacamole (B) setting a laptop on a desk (C) building a roof on a house (D) putting clothes in a suitcase

A:
A
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