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: Bile reduces the acidity of food entering from the highly acidic stomach., Fact2: Bile, a fluid made by the liver, is stored in the gallbladder., Question: Fluid that reduces the acidity of food is stored in (A) the throat (B) Microscopic vessels. (C) the rectum (D) the gallbladder (E) chondrocytes (F) the small intestine (G) holding nutrients (H) intestinal
D

Fact1: the emission of sulfur dioxide causes acid rain, Fact2: The sulfur dioxide is converted into sulfuric acid., Question: what causes acid rain? (A) gases (B) rainfall (C) Pollution (D) fossil fuels (E) emissions (F) vehicles (G) burning (H) wind
E

Fact1: Animals use saturated fatty acids to store energy., Fact2: During hibernation, they use their stored energy very slowly., Question: An animal hibernating is slowly consuming  (A) organic matter (B) Slowing the transfer of heat (C) saturated fatty acids (D) tree roots (E) the amount of oxygen (F) sulfuric acid (G) animal crackers (H) amount of matter

C