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: chemical weathering causes iron in rock to oxidize, Fact2: Oxides Oxides Oxides are elements combined with oxygen., Question: Chemical weathering causes iron in rock to combine with what? (A) uranium (B) oxygen (C) cartilage (D) nothing (E) an object (F) vacuum (G) energy (H) heat
answer:
B

question:
Fact1: Most amphibians breathe with gills as larvae and with lungs as adults., Fact2: All frogs are amphibians., Question: What do frogs breathe with when they are adults? (A) skin (B) fins (C) lungs (D) oxygen (E) gills (F) air (G) Energy (H) Gases
answer:
C

question:
Fact1: an aquatic animal requires great amounts of water to survive, Fact2: Survival is about making a living., Question: An aquatic animal requires a great amount of what to live? (A) oxygen (B) solutes (C) water (D) air (E) enemies (F) salt (G) rain (H) liquid
answer:
C