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: Veins generally carry deoxygenated blood., Fact2: Arteries and veins are blood vessels., Question: what generally carries deoxygenated blood? (A) blood vessels (B) animals (C) layers of fat (D) mammals (E) critical organs (F) an organism's body (G) elephants (H) athletes
answer:
A


question:
Fact1: planting trees has a positive impact on an ecosystem, Fact2: An ecosystem contains many habitats., Question: doing what with trees has a positive impact on habitats (A) making tables (B) chopping down (C) planting (D) watershed (E) earth (F) bloom time (G) growth (H) timbering
answer:
C


question:
Fact1: a cactus stem is used for storing water, Fact2: When the rain stops the cactus is fat because the cactus roots drink the water., Question: When the rain stops the stem used for storing water is fat because the what drink the water (A) animals (B) liquid (C) lipids (D) skin (E) fatty (F) fibrous (G) leaves (H) roots
answer:

H