Which payment method is typically made at specified intervals, often monthly?

The correct response indicates that progress payments are commonly made at specified intervals, such as monthly. This method allows for the disbursement of funds throughout the duration of a project, typically based on the completion of certain milestones or phases of work. Progress payments help maintain cash flow for contractors and ensure that work continues without significant financial disruptions.

This structured payment process supports project management, as it aligns financial outlays with the progression of work, allowing both the contractor and the project owner to track progress and expenses effectively. It also serves as a means to incentivize timely completion of project phases.

In contrast, final payments are made only at the conclusion of a project, which does not fit the criteria of being at specified regular intervals. Advance payments occur at the start of a project or before work is completed, serving a different purpose entirely and not involving ongoing intervals. Retainage payments are withheld until project completion to ensure compliance with contract terms, yet they are not regularly scheduled payments either, as they are typically paid only once the project is finished or certain conditions are met.