Final answer:
To ensure a policy speech effectively addresses an issue and proposes solutions with a plan, a writer must use an Organizational structure.
Step-by-step explanation:
In crafting a policy speech that acknowledges an issue, identifies a solution, and delineates a plan of action, a writer should utilize a d) Organizational structure. Such a structure is critical as it allows the writer to present their position on a debatable issue, support this position with credible evidence, and structure the argument in either a thesis-first or thesis-last manner. A well-organized proposal typically begins with an introduction, discusses the problem, explores possible solutions, addresses potential objections, and concludes with a clear recommendation.