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").

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
B

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
E

Fact1: breathing is when a gill converts from oxygen in water into oxygen in blood, Fact2: Many people confuse breathing with respiration, but breathing is just the first step of respiration., Question: what is it when a gill converts from oxygen in water into oxygen in blood? (A) fertilization occurs (B) prolactin release (C) preventing heat transfer (D) first step of respiration (E) last step of digestion (F) flow of electrons (G) death (H) fish

D