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: Blood pressure is highest in arteries and lowest in veins., Fact2: Blood Pressure Blood Pressure Blood pressure is the force of the blood on the artery walls., Question:  is highest in arteries and lowest in veins. (A) matter (B) voltage (C) Length (D) solutes (E) glucose (F) measure (G) Force (H) Joules
[A]: G


[Q]: 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
[A]: C


[Q]: Fact1: wind and rain cause erosion, Fact2: Wind, water, and sunshine contribute to the erosion process that can change our landscape., Question: Wind and rain contribute to a process that can change what? (A) our lives (B) our caverns (C) important habitats (D) loose soil (E) watershed (F) our landscape (G) coastlines (H) our property lines
[A]:
F