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: when a metal rusts , that metal becomes orange on the surface, Fact2: Cast-iron and steel surfaces are susceptible to corrosion in the form of rust., Question: Cast-iron and steel surfaces are susceptible to becoming what on the surface? (A) hardness (B) solid (C) irritants (D) acids (E) orange (F) heat (G) Unsafe (H) damaging
answer:
E


question:
Fact1: cross-pollination increases genetic diversity, Fact2: Evolution requires genetic diversity., Question: What does evolution require? (A) Time and energy (B) Plant reproduction (C) cross-pollination (D) Reproduction (E) gene flow (F) coded genes (G) circulatory systems (H) animals with backbones
answer:
C


question:
Fact1: most canyons are formed by flowing rivers through erosion over long periods of time, Fact2: Most river erosion occurs when the river is in flood., Question: what are most canyons formed by over long periods of time? (A) hurricanes (B) wind tunnels (C) dangerous (D) forces (E) kalenchoes (F) flooding (G) high populations (H) Sediment
answer:

F