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: Feathers help birds fly and provide insulation., Fact2: Some birds are flightless birds., Question: Why do the flightless have feathers? (A) layers of fat (B) Sublimation (C) it needs them (D) warm-blooded (E) Air conditioning (F) Radiation (G) Insulation (H) protect them
answer:
G


question:
Fact1: tidal energy can be used to produce electricity, Fact2: Tidal caves are formed by the energy of the rising and falling tides., Question: what can produce electricity? (A) rivers (B) animal transport (C) tidal caves (D) Nematoda (E) rays or beams (F) animals (G) cactuses (H) photons
answer:
C


question:
Fact1: pollutants have a negative impact on the environment, Fact2: Hydrocarbon emissions are one of the pollutants that create ozone pollution., Question: what has a negative impact on the environment? (A) forest is destroyed (B) habitats (C) animals (D) oxygen (E) deforestation (F) movements in the earth's crust (G) harmful substances (H) hydrocarbon emissions
answer:

H