What visualization tool can Kathy use to identify integrations between Teams, Google Sheets, and Google Docs?

A tool stack matrix is particularly effective for Kathy's needs as it provides a comprehensive overview of the different tools being used in conjunction with each other. In this context, a tool stack matrix can show how Teams, Google Sheets, and Google Docs integrate and interact within her workflow. This visualization helps in identifying relationships and dependencies between different applications, allowing for clear insights into how data flows among these tools.

The other options do not serve the same purpose as effectively. A project timeline focuses on scheduling tasks and milestones rather than visualizing integrations between tools. A risk assessment matrix is primarily used for evaluating risks associated with projects and does not provide insights into tool interactions. A workflow diagram depicts the steps and processes involved in a workflow but might not specifically highlight the integrations among different applications as a tool stack matrix would.