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: mechanical weathering is when rocks are broken down by mechanical means, Fact2: Pysical weathering is the mechanical breakdown of rocks., Question: What is when rocks are broken down? (A) roof weathering (B) Plant growth is reduced (C) brick weathering (D) Physical weathering (E) remains of prehistoric life (F) at or near the margins (G) home weathering (H) major threat to health
D

Fact1: Echinoderms use pheromones to communicate with each other., Fact2: All echinoderms are deuterostomes ., Question: What use pheromones to communicate with each other? (A) passenger pigeons (B) honeybees (C) deuterostomes (D) Most plants (E) insects (F) animals (G) huddle together (H) orchids
C

Fact1: Animals use saturated fatty acids to store energy., Fact2: Potential energy is stationary, stored energy., Question: Animals use saturated fatty acids to create what? (A) stationary potential energy (B) it helps plants in growing (C) animal houses (D) elaborate meals (E) To keep their body heat. (F) it keeps an organism warm (G) Monosaccharides (H) energized conversations

A