You need to modify the workflows for an existing Logic App. Which tool should you use to edit them?

The Logic Apps Designer is the primary graphical interface within the Azure portal for creating, editing, and visualizing Logic App workflows. It allows you to drag and drop actions, configure triggers, and define the flow of your integration. While the Logic App Code View allows for direct manipulation of the underlying JSON definition, it's typically used for advanced scenarios or programmatic changes, not as the primary editing tool for workflows. The Enterprise Integration Pack (EIP) provides connectors and capabilities for enterprise integration scenarios but is not a tool for editing Logic App workflows themselves. API Connections are resources that store connection details for various services, used by Logic Apps, but are not an editing tool.