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: 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: breaking apart rocks can cause debris, Fact2: Examples of such rock include sandstone and shale ., Question: What can cause debris? (A) breaking apart sandstone (B) some invertebrates (C) breaking apart air (D) remains of prehistoric life (E) exposure to cold (F) breaking apart clouds (G) breaking apart water (H) forest is destroyed
[A]: A


[Q]: Fact1: an animal requires air for survival, Fact2: Animals require oxygen for breathing., Question: Mammals require what for breathing? (A) soil (B) energy (C) saltwater (D) water (E) lungs (F) glycogen (G) air (H) oxygen
[A]:
H