PowerPoint Copilot can create a new presentation based on your written prompts or _____.

PowerPoint Copilot's functionality allows it to synthesize information and generate presentations not only from your written prompts but also by leveraging information from existing documents. This feature is particularly powerful as it enables users to create presentations that are informed by pre-existing content, ensuring that the output is relevant and aligned with previously established knowledge or information.

When using existing documents, PowerPoint Copilot can extract key points, images, data, and other elements to formulate slides that effectively communicate the intended message or ideas without requiring users to start from scratch. This capability streamlines the presentation creation process and enhances productivity, making it an invaluable tool for users who need to quickly convey complex information or insights gathered from prior materials.

This contrasts with the other options, which may suggest alternative sources of information but do not encompass the broader capability of leveraging extensive existing content as effectively as the selected answer.