An oral system proposal is a presentation that supplements the formal written document. Its purpose is to effectively communicate the proposed solution and gain stakeholder approval. This involves project leaders presenting the system's key features, benefits, and feasibility, guiding users through how it addresses their specific problems (C). A primary and unique advantage of the live, oral format is its interactive nature. It provides an immediate forum for stakeholders, including customers and users, to ask questions, seek clarification on points from the written or oral presentation, and express concerns (B). This two-way communication is vital for building consensus and ensuring the proposed system meets expectations before development proceeds.

A. The oral presentation summarizes and highlights the written proposal; it does not serve as a substitute for the detailed, formal written document required for record-keeping and reference.

1. Kendall, K. E., & Kendall, J. E. (2014). Systems Analysis and Design (9th ed.). Pearson. In Chapter 11, "Presenting the Systems Proposal," the text describes the presentation as a method to "sell the system proposal" by walking the audience through the main points and solution features. It explicitly highlights the importance of the question-and-answer session for clarification and feedback.

2. Satzinger, J. W., Jackson, R. B., & Burd, S. D. (2016). Systems Analysis and Design in a Changing World (7th ed.). Cengage Learning. Chapter 6, "Foundations for Systems Design," discusses the system proposal as the culmination of the analysis phase. The presentation of this proposal is described as a key step for obtaining approval, which involves both explaining the proposed solution (the walkthrough) and addressing stakeholder questions.

3. Valacich, J. S., & George, J. F. (2020). Modern Systems Analysis and Design (9th ed.). Pearson. Chapter 5, "Initiating and Planning Systems Development Projects," details the project proposal process. It notes the importance of presentations for communicating project scope, benefits, and features, and for facilitating a crucial question-and-answer period with stakeholders. The oral presentation is always positioned as a complement to a written report.