Which of the following facilitated film's ascendancy over vaudeville as the preeminent mass entertainment medium in 1900?

A) antitrust legislation
B) a variety-show entertainer strike
C) an increased minimum wage
D) the implementation of a 40-hour work week

Vaudeville

A genre of variety entertainment in the United States and Canada from the early 1880s until the early 1930s, featuring a mixture of specialty acts such as comedy, song, and dance.

Antitrust Legislation

Laws and regulations enacted to promote competition and prevent unfair monopolies or practices within the marketplace.

Variety-Show

A type of entertainment that includes multiple acts, including music, comedy, and dance performances, presented in a single program.