TASK DEFINITION: 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").
PROBLEM: Fact1: hydropower requires damming a river, Fact2: Another source of energy is hydropower., Question: What is a source of energy? (A) fossil fuels (B) cooking (C) damming a river (D) sleeping (E) napping (F) Electrical energy (G) our nearest star (H) sunlight

SOLUTION: C

PROBLEM: Fact1: pollutants have a negative impact on the environment, Fact2: Carbon dioxide is a pollutant., Question: What affects the environment negatively? (A) sunlight (B) normal weather patterns (C) carbon dioxide (D) cigarettes (E) positivity (F) Smoking (G) harmful substances (H) fossil fuels

SOLUTION: C

PROBLEM: Fact1: Bile reduces the acidity of food entering from the highly acidic stomach., Fact2: Bile , synthesized by the liver, contains HCO3-, bile salts and bile pigments., Question: What organ reduces the acidity of food entering from the highly acidic stomach? (A) tubular organ (B) potassium (C) enzymes (D) ibuprofen (E) flagella (F) intestinal (G) the liver (H) estrogen

SOLUTION:
G