instruction:
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").
question:
Fact1: Protozoa can be classified on the basis of how they move., Fact2: Paramecium are protozoa, single celled animals., Question: What can be classified on the basis of how they move? (A) each species (B) aquatic organisms (C) reptiles ancestral to mammals (D) single celled organisms (E) microbes and mussels (F) trailers and boats (G) How fast a vehicle is going (H) melanin content
answer:
D


question:
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
answer:
G


question:
Fact1: energy is used for heating a building by a heating system, Fact2: Radiators are used to heat the building, The energy source is oil., Question: What is used to heat a building by a heating system? (A) engines (B) wind (C) insulation (D) photons (E) radiator (F) body heat (G) calcite (H) ice
answer:

E