Why is it a mistake to overuse exclamation points in your writing

Which word best describes the white rabbit in the passage?

Which of the following is the original meaning of the word college? a. an independent institution of higher learning offering a course of general studies leading to a bachelor’s degree b. a building used for an educational or religious purpose c. a group of persons considered by law to be a unit d. a body of clergy, living together and supported by a foundation

This excerpt expresses shelleys idea that poetry is factual?