Comprehensive and Detailed 150 to 200 words of Explanation Microsoft AI Business professional documents:
Custom instructions in Microsoft 365 Copilot allow users to define persistent preferences that shape how Copilot responds across future interactions. According to Microsoft AI Business Professional guidance, these instructions are intended to personalize the Copilot experience by specifying communication preferences such as writing style, tone, level of detail, formatting, and other response characteristics. Once configured, these preferences are automatically applied to new Copilot conversations, providing a more consistent experience without requiring users to repeat the same instructions in every prompt.
Option B is correct because it accurately describes the primary purpose of custom instructions. Examples include asking Copilot to respond in a professional tone, use concise language, produce executive summaries, or format responses as bullet points.
Option A is partially related because users may include personal information within custom instructions, but the primary purpose is not to provide profile information—it is to establish response preferences. Option C is incorrect because security and data-sharing policies are enforced through Microsoft 365 administration and Microsoft Purview, not through custom instructions. Option D is incorrect because custom instructions do not grant Copilot additional permissions or autonomous action capabilities.
Therefore, the correct answer is B .
