A company wants to improve interaction between users. The company requires information about collaboration features in Microsoft Excel for Microsoft 365. You need to identify Excel collaboration…

Co-authoring in Excel for Microsoft 365 allows multiple users to simultaneously edit the same workbook stored in OneDrive or SharePoint, with real-time presence indicators showing where each user is working, directly improving user interaction and collaboration.

Threaded comments in Excel allow users to have contextual conversations tied to specific cells, where team members can reply to comments and tag colleagues using @mentions, creating a structured discussion thread that improves collaboration within the workbook.

Line focus is an accessibility feature in Microsoft Word (and other Office apps) designed to help users with reading difficulties by highlighting one or a few lines at a time - it is not a collaboration feature and is not primarily associated with Excel.

Mail merge is a feature in Microsoft Word used to generate personalized bulk documents by combining a template with a data source; it is not a collaboration feature and is not native to Excel as a standalone feature.