In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
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Question: Fact1: astronauts require preserved food for extended flights, Fact2: Most of the Shuttle foods are preserved by dehydration, which saves weight and storage space., Question: astronauts require what food for extended flights? (A) Echinoderm. (B) layers of fat (C) dehydrated (D) fresh (E) hand picked (F) nutrients (G) frozen (H) hydration

Answer: C

Question: Fact1: a compass is used to navigate oceans, Fact2: And to the east is the Atlantic Ocean., Question: what is a compass used to navigate? (A) density (B) lamphreys (C) marine (D) outer space (E) their speed (F) Antarctica (G) non-magnetic planets (H) the Atlantic

Answer: H

Question: Fact1: Most plants grow roots down into the soil to absorb water and minerals., Fact2: Plant roots begin to stabilize the soil against erosion., Question: What is a positive effect of plant needs for water and minerals from soil? (A) erosion prevention (B) reducing acid rain (C) It helps them survive (D) agriculture (E) nutrient deficiency (F) water run-off (G) erosion (H) Exfoliation

Answer:
A