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").

[Q]: Fact1: Fertilization takes place inside the female organism., Fact2: Fatty tissue in a woman's body produces female hormones., Question: Where does human fertilization naturally take place? (A) hard shelled egg (B) petri dish (C) bushes (D) man (E) Earth (F) eggs (G) woman (H) orchids
[A]: G

[Q]: Fact1: erosion of soil has a negative impact on the environment, Fact2: Weathering and erosion continue to shape it today., Question: What has a negative impact on the environment? (A) harmful substances (B) weathering of soil (C) saving water (D) planting trees (E) deforestation (F) massive damage (G) recycling (H) enormous damage to homes
[A]: B

[Q]: Fact1: knowledge of the stars can be used to navigate, Fact2: Navigation is a key element of space travel., Question: What can knowledge of the stars be used for? (A) travel (B) art (C) as a base (D) safety (E) story telling (F) light source (G) vision (H) life
[A]:
A