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: 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
[A]: G

[Q]: Fact1: if an organism becomes too hot then that organism may die, Fact2: Death, and the process of dying, is the final phase of life., Question: If an organism becomes too hot, what might it experience? (A) carbon dioxide loss (B) anemia (C) death (D) cancer (E) disease (F) digestion (G) freezing (H) sweat
[A]: C

[Q]: Fact1: adding salt to a liquid decreases the melting point of that liquid, Fact2: Sodium Chloride: It is a table salt ., Question: What do you add to decrease the melting point of a liquid? (A) salinity (B) Dehydration (C) Heat energy (D) sodium chloride (E) layers of fat (F) chemical changes (G) evaporation (H) aqueous solution
[A]:
D