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: natural disasters can cause animals to leave an environment, Fact2: And like fire, flooding is a common and widespread natural disaster., Question: What can cause animals to leave their environment? (A) predators (B) rainfall (C) space travel (D) flooding (E) drought (F) mines (G) wind (H) weather
D

Fact1: Loss of ozone has created an ozone hole over Antarctica., Fact2: Antarctica's ozone layer is threatened by depletion., Question: What can loss of ozone lead to? (A) irritants (B) bad weather (C) Car accidents (D) ozone hole (E) rain (F) A hurricane (G) stormy weather (H) destroyed crops
D

Fact1: pushing on the pedals of a bike cause that bike to move, Fact2: Well, when riding a bike, human power is used to turn the pedals., Question: What causes a bike to move? (A) Coal power (B) energy (C) friction (D) magic (E) mechanical (F) Human power (G) Dog power (H) Energy.

F