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: Annelids have the amazing capacity to regrow segments that break off., Fact2: Annelids have closed circulatory systems., Question: what kind of circulatory system can some segmented animals have? (A) organ (B) insects (C) made (D) warm (E) three (F) complex (G) closed (H) epidermal
answer:
G

question:
Fact1: Mutualism is a symbiotic relationship in which both species benefit., Fact2: Dogs and humans are symbiotic species., Question: what exists between dogs and humans? (A) mutualism (B) gravity (C) communication (D) antigens (E) several genes (F) space between (G) electrons (H) german shepherd
answer:
A

question:
Fact1: harming an animal species has a negative impact on the population size of that species, Fact2: Populations are the sub-units of species., Question: harming an animal species has a negative impact on the what? (A) sub-units of species (B) single-celled organisms (C) diet of species (D) most organisms (E) color of species (F) ancestors of species (G) Abnormal cell growth (H) Males and females
answer:
A