Which of the following is a duty of the Speaker of the House?

The role of the Speaker of the House includes setting the legislative agenda, which is a crucial duty in guiding the priorities and schedule of proposed legislation within the House of Representatives. This means the Speaker determines which bills and issues are brought to the floor for debate and vote, effectively shaping the overall legislative priorities of the House. By doing so, the Speaker ensures that important matters receive attention and that the legislative process runs smoothly according to the majority party's goals.

Other roles, such as drafting bills, are typically performed by individual members of the House or committees rather than by the Speaker directly. Additionally, representing the Senate and conducting Supreme Court trials are responsibilities assigned specifically to other offices, namely the Vice President for the Senate and the Chief Justice for court proceedings, respectively.