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").
--------
Question: Cows know there is salt in a mineral lick because (A) they have receptors on their tongue that allow them to experience spice and seasonings (B) a cow in the ocean told them it was there (C) it's on their side of the pasture's fence (D) they evolved where there were great redwood trees

Answer: A


Question: In the 60's people watched on TV while for the first time people walked on (A) a high rooftop in a major city (B) a satellite without much air in our solar system (C) the edge of a cliff in the mountains (D) a beach in Brazil

Answer: B


Question: trees have chlorophyll so they make their own (A) root structure (B) water (C) scheduled (D) nutrients

Answer:
D