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").
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Question: Fact1: Ants communicate with chemicals called pheromones., Fact2: Ants are of extreme importance in the insect world., Question: How do some insects communicate? (A) sound (B) sensory neurons (C) Decibels (D) electronic waves (E) progesterone (F) Vibrates (G) pheromones (H) radio waves

Answer: G


Question: Fact1: Grasses supply most of the food consumed by people worldwide., Fact2: Sugarcane, a grass, provides much of the world's sugar., Question: What is an example of a plant that supplies most of the food consumed by people worldwide? (A) Sugarcane (B) orchids (C) bushes (D) bioaerosols (E) cacti (F) trees (G) ferns (H) Chlorophyll

Answer: A


Question: Fact1: carbon dioxide concentrations in the air have increased over the last decade dramatically, Fact2: Carbon dioxide, CO2, is usually a harmless gas., Question: what concentration in the air has increased dramatically over the last decade? (A) zinc (B) CO2 (C) h2o (D) CFCs (E) lungs (F) coal (G) O2 (H) CO 2

Answer:
B