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").

Q: Fact1: a light bulb is used for seeing in the dark, Fact2: Light is emitted by a light bulb., Question: What is required for seeing? (A) dark (B) sun (C) light (D) wind (E) retina (F) eyes (G) photons (H) copper

A: C
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Q: Fact1: high pressure systems cause clear weather, Fact2: High pressure systems tend to bring calm weather., Question: What do high pressure systems make? (A) heat energy (B) energy (C) electricity (D) calm days (E) fossil fuels (F) Solutions (G) Pollution (H) Metling snow

A: D
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Q: Fact1: a circle graph can be used to display percents, Fact2: Percent is parts per hundred., Question: What can be used to display parts per hundred? (A) changes in size (B) antigens (C) a circle graph (D) an invisible graph (E) nothing (F) Surfaces and counters (G) melanin amount (H) an audio recording

A:
C
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