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: measuring the hardness of minerals requires scratching those materials, Fact2: To figure out the hardness of a mineral, the Moh's scale of hardness is used., Question: the Moh's scale of hardness is used by doing what to the materials (A) heating (B) tool extensions (C) protection (D) classified (E) scratching (F) as a base (G) how they move (H) Cladistics
[A]: E

[Q]: Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: Background Hot water vents form inside cracks in the ocean floor., Question: Organisms cluster around hot water inside cracks where? (A) loose soil (B) ocean floor (C) food and shelter (D) tectonic plates (E) the ground (F) allow growth (G) Absorb light (H) survive
[A]: B

[Q]: Fact1: the Earth revolving around the Sun causes the seasons to change on its axis, Fact2: Seasons are caused because the earth's axis is tilted as the earth revolves around the sun., Question: what causes seasons? (A) moon (B) decreased differentiation (C) earth's revolving (D) the ocean (E) Physical weathering (F) colors of the spectrum (G) gravity (H) dry conditions
[A]:
C