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: Active immunity results when an immune response to a pathogen produces memory cells., Fact2: Vaccination is Active Acquired Immunity., Question: What results when an immune response to a pathogen produces memory cells? (A) anemia (B) vaccination (C) kill them (D) competition (E) lie detectors (F) rapid expansion (G) killing insects (H) it needs them
answer:
B

question:
Fact1: heating salt water causes the water to evaporate while the salt remains, Fact2: Salt is produced by the evaporation of sea water., Question: how is salt produced? (A) flow of electrons (B) solid, liquid, gas (C) chemical messengers (D) Solutions (E) Physical weathering (F) It gets heated up (G) near the shoreline (H) heating water
answer:
H

question:
Fact1: Fungi are the only organisms that can decompose wood., Fact2: Wood products rapidly decompose and are biodegradable., Question: What re the only organisms that can decompose biodegradable products? (A) fungi (B) pine (C) fires (D) plants (E) trees (F) viruses (G) fungus (H) spores
answer:
A