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: wind and rain cause erosion, Fact2: Water, in the form of rain, is the most effective agent of erosion., Question: What causes erosion the most? (A) streams (B) motion (C) LEDs (D) water (E) Roads (F) rivers (G) Winter (H) wind

Answer: D


Question: Fact1: Many corals secrete an exoskeleton that builds up to become a coral reef., Fact2: Good examples are Bubble coral, Elegance coral, Frogspawn and other Euphyllia corals., Question: What is secreted by organisms like frogspawn to become a reef? (A) exocrine glands (B) food and shelter (C) exoskeleton (D) bones (E) Energy (F) Chemical energy (G) plasma (H) Energy.

Answer: C


Question: Fact1: biofuel is used to produce electricity by burning, Fact2: Biofuels include ethanol, methanol, biodiesel, biocrude, and methane., Question: what produces electricty by burning? (A) cactuses (B) ethanol (C) engines (D) cigars (E) organisms (F) cigarettes (G) Conifers (H) ferns

Answer:
B