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: matter vibrating can cause sound, Fact2: All matter emits vibrations., Question: What kind of matter can produce sound? (A) sensory neurons (B) all matter (C) an object (D) only liquids (E) mechanical (F) only plasma (G) only solids (H) waves
[A]: B

[Q]: Fact1: Most protists have motility., Fact2: Protists are single-celled microscopic organisms like amoebae., Question: _ have motility (A) amoebae (B) plants (C) properties (D) minerals (E) fungi (F) movement (G) hydration (H) complex
[A]: A

[Q]: Fact1: harming an animal species causes that animal 's population to decrease, Fact2: Regular overfishing can decline an animal population to the point of extinction., Question: What can result in extinction? (A) Harming an animal species (B) scattered light (C) exposure to cold (D) Ignoring an animal species (E) deforestation (F) Helping an animal species (G) DNA damage and mutations (H) Growing food for animals
[A]:
A