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: volcanic ash in the atmosphere decreases the temperature by blocking the sun, Fact2: Supersaturation is inferred to be a common state for atmospheric haze particles., Question: What decreases the temperature by blocking the Sun? (A) cilia (B) the Sun (C) the wind (D) haze (E) ice (F) fat (G) rain (H) acids

A: D
****
Q: 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

A: G
****
Q: Fact1: friction causes the temperature of an object to increase, Fact2: Friction in bearings causes an increase of the temperature inside the bearing., Question: What increases the temperature of a bearing? (A) metal type (B) water (C) friction (D) Energy. (E) wind (F) speed (G) vaporization (H) energy

A:
C
****