What kind of document is typically written to assist in decision-making or problem-solving?

A report is a document that is specifically designed to present information, analysis, and findings on a particular subject, which can greatly assist in decision-making or problem-solving processes. Reports often compile data, research, and insights that provide context and support for any conclusions drawn. They can take various forms, such as status reports, research reports, or analytical reports, each tailored to inform stakeholders and guide their actions based on factual, detailed information.

In contrast, a proposal is aimed at persuading the reader to accept a plan or idea rather than solely presenting information. A letter typically has a personal or formal communication purpose, which may not directly support decision-making in the same structured manner as a report. A news release serves to inform the public about events or announcements and is not primarily focused on aiding in internal decision-making processes. Thus, a report stands out as the most appropriate document for supporting informed decisions and effective problem-solving.