instruction:
In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").
question:
Which of the following would have best aided a vessel at sea in crossing the sea in the 18th century? (A) A radar system (B) An old soothsayer (C) An experienced navigator (D) A crow's nest
answer:
C


question:
Amphibians undergo changes in structure of being in that (A) salamanders can regrow their tails (B) salamanders can lose their tails (C) frogs can breathe air and water (D) they begin as a different looking being
answer:
D


question:
If a person is choosing to be near a metal heat source, normally located on a building's interior wall, then that person (A) is combusting (B) is too hot (C) desires warmth (D) is on fire
answer:

C