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: Biomass is the total mass of organisms at a trophic level., Fact2: Producers make up the first trophic level, primary consumers the second, and so on., Question: What is the total mass of primary consumers (A) Plants (B) animals (C) food (D) Mountains (E) Biomass (F) decreases (G) all matter (H) Weight
answer:
E

question:
Fact1: Some touch receptors sense differences in temperature or pain., Fact2: Touch receptors are free nerve endings or nerve endings that are surrounded by a capsule., Question: What senses differences in temperature? (A) the skin (B) Electric devices (C) animals (D) an electric stove (E) nerve endings (F) an organism's body (G) Most plants (H) peachleaf willow
answer:
E

question:
Fact1: Plants exhibit phototropism, or growing toward a light source., Fact2: Light comes from the sun., Question: What is plant's tendency to grow toward the sun called? (A) photomorphism (B) phototropism (C) photosynthesis (D) peachleaf willow (E) Conifers (F) Exfoliation (G) vegetation (H) photochromic
answer:
B