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: pollutants have a negative impact on the environment, Fact2: Environment and Health Environment and Health All living things depend on their environment., Question: pollutants have a negative impact on all what (A) tractors (B) circulatory systems (C) near the shoreline (D) living things (E) Electrical energy (F) pavement (G) potholes (H) important habitats
[A]: D


[Q]: Fact1: Pneumonia may be caused by an infection or injury of the lungs., Fact2: Lung injuries are treated with bronchodilatory treatment., Question: What treatment can be used in treating pneumonia? (A) the respiratory system (B) a breathing mask (C) bronchodilatory treatment (D) aqueous solution (E) immunotherapy (F) radiation therapy (G) immune system (H) chemotherapy
[A]: C


[Q]: Fact1: Plants exhibit phototropism, or growing toward a light source., Fact2: Many light sources such as the sun and most artificial lights produce unpolarized light., Question: What is called when plants grow toward the sun or an artificial light? (A) Exfoliation (B) Brownian motion (C) heat energy (D) phototropism (E) photovoltaic (F) autumn (G) peachleaf willow (H) mitosis
[A]:
D