Explanation:

In Microsoft Copilot Studio, knowledge sources allow an agent to generate responses from configured content such as websites, files, SharePoint content, Dataverse, or other approved knowledge repositories. This reduces the need to manually create a separate scripted topic for every possible user question. Instead, the agent can use generative answers grounded in the configured knowledge source and respond dynamically based on the user's request. Changing only the response format is too narrow and does not describe knowledge sources.
Summarizing Teams meetings is more aligned with Microsoft 365 Copilot scenarios. Creating one scripted topic for every question is exactly what knowledge sources help avoid.