instruction:
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").
question:
Fact1: Some parasites kill their host, but most do not., Fact2: Parasites include lungworms and GI parasites., Question: What can kill their host? (A) cigarettes (B) bacteria (C) adding heat (D) heat or cold (E) burning (F) Dehydration (G) lungworms (H) Pollution
answer:
G

question:
Fact1: Mollusks have a circulatory system with one or two hearts that pump blood., Fact2: An abalone is a shellfish or mollusk., Question: What has a circulatory system with one or two hearts that pump blood? (A) a fish (B) sharks (C) abalone (D) elephants (E) humans (F) crocodiles (G) giraffes (H) fur seals
answer:
C

question:
Fact1: Mutations are essential for evolution to occur., Fact2: Evolution causes species to change over time., Question: The changes in species that have been seen over time required (A) Energy (B) exercise (C) strong microscopes (D) mutations (E) gene splicing (F) warm weather (G) vegetation (H) Energy.
answer:
D