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: Carbon cycles quickly between organisms and the atmosphere., Fact2: Water, carbon dioxide, and nitrogen are all needed by living things., Question: What is needed by living things? (A) hate (B) sunlight (C) Chemical energy (D) pain (E) love (F) hydration (G) The atmosphere (H) Energy.
[A]: G


[Q]: Fact1: seeing requires light, Fact2: Sight is the mere ability to see, and the eye's responses to light shining into it., Question: What do eyes require? (A) a form of oxygen (B) Light shining into it (C) Exposure to oxygen and water (D) A dark environment (E) Contact lenses (F) melanin amount (G) tissue made of chondrocytes (H) Glasses
[A]: B


[Q]: Fact1: medicine is used for curing people when they are sick, Fact2: Botanical Medicine Many plant substances are powerful medicines., Question: Many what substances are powerful cures for people when they are sick (A) gas (B) lymph (C) sweet (D) plant (E) food (F) animals (G) marine (H) nectar
[A]:
D