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: 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
[A]: C


[Q]: Fact1: a flashlight converts chemical energy into light energy, Fact2: A joule is roughly the energy used by a flashlight turned on for one second., Question: What is converted in a flashlight? (A) hydrogen and oxygen (B) adding heat (C) an electron lens (D) hydrogen to water (E) chemicals to light (F) batteries into solar (G) heat into light (H) chlorofluorocarbons
[A]: E


[Q]: Fact1: most canyons are formed by flowing rivers through erosion over long periods of time, Fact2: Geological erosion is natural occurring erosion over long periods of time., Question: Most canyons are formed by rivers flowing and what type of erosion? (A) forces (B) mechanical (C) uncontrolled (D) geological (E) Water expanding (F) flooding (G) thrust (H) barrel-shaped
[A]:
D