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: high pressure systems cause clear weather, Fact2: Weather Clear weather usually means good visibility., Question: what does a high pressure system cause? (A) hyperthyroidism (B) lowered energy cost (C) harmful substances (D) Heart rate (E) good visibility (F) It gets heated up (G) Pollution (H) rainfall

A: E
****
Q: Fact1: the Himalayas were formed by rock folding, Fact2: If the rocks are not as brittle, they will either tilt or fold., Question: What is the consistency of the Himalayan rocks? (A) crust (B) Loose (C) simple (D) cold (E) loose soil (F) Smooth (G) liquid (H) Brittle

A:
H
****