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: 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

A: A
****
Q: Fact1: Mollusks live in most terrestrial, freshwater, and marine habitats., Fact2: Though most trout are freshwater fish, some live in marine waters., Question: What do some mollusks live near? (A) gills (B) rivers (C) desert (D) roads (E) fungi (F) trout (G) clouds (H) water

A: F
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Q: Fact1: heating a liquid can be used to identify that liquid 's boiling point, Fact2: Heat is caused by vibrations of the atoms and molecules of substances., Question: To identify that liquid 's boiling point requries (A) vibrations of the atoms (B) kinetic energy (C) degrees Celsius (D) The bending of a ray of light (E) degrees celcius (F) Evaporation of water (G) evaporative cooling (H) fissures of hot, acidic water

A:
A
****