Establish/Maintain a Formal Argument Style Practice Test

Read this speech draft to the school board: “We propose a later start time because it can improve sleep and attendance.” Which next sentence best maintains the formal style?

In a formal proposal to the student council, why is formal style appropriate for this argument?

Proposal: We request that the school create a recycling program in every hallway. This program would be beneficial because it could reduce waste and keep the campus cleaner. Furthermore, it would demonstrate that students can take responsibility for shared spaces.​