Which tool in Pega allows for the visualization of process flows?

The Process Modeler is the correct choice for visualizing process flows in Pega. This tool provides a graphical interface where users can create, edit, and visualize process flows, allowing for a clear representation of how different tasks and stages in a process are connected. It focuses on process-level design, enabling users to define each step, manage flow conditions, and understand the interactions between various process components.

While Flow Designer also facilitates the design of flows, its emphasis is on creating and managing the flow of a case rather than explicitly visualizing process flows. Case Designer is specifically aimed at managing the overall case lifecycle including case types and their stages, while UI Designer focuses on the presentation layer and user interfaces. Thus, Process Modeler remains the primary tool for visualizing detailed process flow diagrams, making it essential for planning and refining business processes within Pega applications.