Final answer:
Entertainment reforms were not a significant focus of the Progressive Era, which concentrated on government, urban, and business reforms to address social, political, and economic issues.
Step-by-step explanation:
During the Progressive Era, the reform efforts mostly focused on issues such as government reforms, urban reforms, and business reforms. These included dealing with the problems caused by industrialization and urbanization, such as creating labor laws, ensuring safer living conditions, improving public health, providing free education, and regulating business practices like monopolies and consumer safety. Entertainment reforms, however, were not a significant focus of the Progressive Era; the movement emphasized more serious social, political, and economic issues. For instance, the Progressives worked on anti-liquor campaigns, referendums, and legislation like the Sherman and Clayton Acts, as well as created institutions like the Labor Department to address social woes and labor abuses. In the context of the options provided, the correct answer is Entertainment reforms.