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").
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Question: Fact1: Mutations are essential for evolution to occur., Fact2: Mutations are changes in the DNA sequence., Question: What is essential for evolution to occur? (A) Changes in DNA sequences (B) Plant reproduction (C) Natural disasters (D) Gamma radiation (E) biological diversity (F) DNA sequences staying the same (G) the environment (H) that material's properties

Answer: A

Question: Fact1: Hydrogen bonds cause water to expand when it freezes., Fact2: Deuterium, or heavy hydrogen, is an isotope of hydrogen, or a hydrogen atom with a neutron added., Question: The bonds of that which when heavy is Deuterium cause what to expand when it freezes? (A) matter (B) rings (C) CO 2 (D) liquids (E) gas (F) solutes (G) cations (H) water

Answer: H

Question: Fact1: boulders are formed by glaciers melting sometimes, Fact2: Erratics are boulders that are deposited by glaciers as part of moraines., Question: What are erratics formed from? (A) rain weather (B) coarse grit (C) rainfall (D) fossils (E) hail (F) rain (G) glaciers (H) Thunderstorm

Answer:
G