Copilot in Microsoft Teams is designed to help users work faster by summarizing meeting content and assisting with message composition in chats and channels. Microsoft guidance highlights that Copilot can synthesize what was discussed in a meeting by generating a structured recap that includes key points, decisions, and action items. This directly matches option C . Copilot can also help you respond more quickly in Teams conversations by drafting replies grounded in the context of the existing chat or channel thread, which matches option D .

Options A and B are not Copilot capabilities. Muting and unmuting participants is a meeting control function handled by Teams meeting roles and settings, and it is not automatically driven by Copilot based on participant location. Creating custom backgrounds is a Teams visual feature (and can involve Designer or image tools), but it is not a Copilot-in-Teams productivity function for summarization or drafting based on conversation context.

Therefore, the two tasks you can achieve using Copilot in Teams are generating meeting summaries with decisions and action items, and drafting responses to channel messages based on conversation context.