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").

[Q]: A glacier moved through an area years and years ago, and scientists can tell this by (A) looking at the moon (B) looking at the dogs (C) looking at the sky conditions (D) glancing at nearby stone
[A]: D


[Q]: Blind people are unable to see what the shapes of things are, but they can still sense it thanks contacting it via their (A) flying (B) singing (C) smiling (D) hands
[A]: D


[Q]: a lack of illumination would result in which of these? (A) the restroom overflowing with water (B) a principal's door being locked (C) a student unable to view what he is writing (D) a teacher being unable to transport to school
[A]:
C