What event ( or events) mainly caused the fall of the british empire?

What is the best definition of the underlined word as it is used in the sentence? a statement of wit or amusement an expression of disapproval or condemnation a sentiment of indifference or apathy an exclamation of profound admiration or esteem

Could someone me with this question?

Read this passage from "the pedestrian" by ray bradbury: which sentence best describes the overall impact of the setting?