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: a fire requires oxygen to burn, Fact2: In the vacuum of space, there's no oxygen to burn., Question: Where is fire impossible? (A) evaporation (B) In space (C) A computer (D) uncontrolled (E) Inside a car (F) On television (G) summer end (H) On a mountain
B

Fact1: Bottleneck effect occurs when a population suddenly gets much smaller., Fact2: Severe droughts have caused much of the rural population to urbanize., Question: Severe droughts may cause  (A) evolution (B) population growth (C) forest is destroyed (D) species variation (E) major threat to health (F) Dehydration (G) the ground shaking (H) a bottleneck effect

H