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]: A mountain top heats and lava flows, resulting in (A) a hot golden leaf (B) a cold deep sea (C) a raised portion of land (D) a sunken valley of ice
[A]: C


[Q]: If a thing has a good impact on nature, it is most likely (A) putting plastics in special containers (B) burning old used tires (C) putting cigarettes out in ponds (D) using aerosol air fresheners
[A]: A


[Q]: An example of a mixture is (A) gin and tonic martini (B) plant potted in soil (C) pebbles on a sandy beach (D) a leaf that fell in water
[A]:
A