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: melting means changing from a solid into a liquid by adding heat energy, Fact2: Ice is the solid form of water., Question: What changes ice to water by adding heat energy? (A) mussels (B) melting (C) freezing (D) fertilization (E) storms (F) boiling (G) engines (H) condensation

Answer: B


Question: Fact1: global warming is when worldwide temperature increases, Fact2: Global warming is caused by carbon dioxide trapped in the atmosphere., Question: What does carbon dioxide cause? (A) skateboards (B) Greenhouse gases (C) Worldwide temperature increase (D) major threat to health (E) direct damage to the lungs (F) running (G) a lot of human deaths (H) Temperature decrease

Answer: C


Question: Fact1: shelter is used for protection by animals against weather, Fact2: Acid rain can be especially harmful to plants and animals., Question: What protects creatures from harmful rain? (A) stars (B) Conifers (C) shelter (D) Frogs. (E) clouds (F) moon (G) Frogs (H) the skin

Answer:
C