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: Male dogs use pheromones in urine to mark their territory., Fact2: Pheromones are natural aphrodisiacs., Question: What do male dogs use in urine to mark their territory? (A) Natural aphrodisiacs (B) competing for resources (C) Tails (D) Urine  cleaner (E) Something coming from a gland (F) Chemical energy (G) an area swollen with pus (H) Chew toys

Answer: A


Question: Fact1: being exposed to wind can cause erosion of soil, Fact2: Soil Erosion Soil erosion is caused by disturbance of a land surface., Question: what can being exposed to wind cause? (A) a lot of human deaths (B) death and devastation (C) increase in carbon (D) forest is destroyed (E) a tree falling (F) disturbance of land surface (G) loss of sunlight (H) low tides

Answer: F


Question: Fact1: smell is used for finding food by some animals, Fact2: Food is needed for survival., Question: What do some animals need to survive? (A) radiation (B) smell (C) Energy (D) harm (E) warmth (F) oxygen (G) defeat (H) Water

Answer:
B