Power Automate is the Microsoft Power Platform tool specifically designed to automate repetitive tasks and workflows between applications and services. Its core architecture relies on triggers (events that start a flow) and actions (steps the flow performs in response). Therefore, it is the correct tool for both "Automate workflows" and "Trigger an action from an event."

Power Apps provides a rapid development environment to build custom business applications. It allows users to create custom mobile-optimized interfaces (Canvas apps) for data entry and interaction without extensive coding.

Power BI is utilized for business analytics, data visualization, and reporting, and is not used for workflow automation or creating data entry screens.

Microsoft Learn. (2023). What is Power Automate?. Retrieved from https://learn.microsoft.com/en-us/power-automate/getting-started ("Power Automate is a service that helps you create automated workflows...")

Microsoft Learn. (2023). Get started with Power Automate - Triggers and Actions. Retrieved from https://learn.microsoft.com/en-us/power-automate/get-started-logic-flow ("Every flow starts with a trigger, and then you can add one or more actions.")

Microsoft Learn. (2023). What is Power Apps?. Retrieved from https://learn.microsoft.com/en-us/power-apps/powerapps-overview ("...suite of apps, services, and connectors... provides a rapid application development environment to build custom apps...")