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").

Fact1: Evolution occurs by a process called natural selection., Fact2: Adaptation is the result of natural selection., Question: What leads to evolution? (A) Plants growth (B) competition (C) Adatation (D) our star (E) Experimentation (F) Stagnation (G) environment (H) Information
C

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
G

Fact1: erosion causes deposition, Fact2: Silts and muds are transported to the open ocean and deposited off the coast., Question: Erosion causes silts and mud to be what? (A) flooding (B) transported (C) Sediment (D) stabilized (E) storing water (F) rivers (G) ignored (H) unmoved

B