Which option allows users to automate workflows in ArcGIS Pro?

Model Builder is the tool within ArcGIS Pro specifically designed for automating workflows. It enables users to create a visual representation of geoprocessing workflows, connecting various tools and processes seamlessly. This graphical interface allows users to drag and drop tools, connect inputs and outputs, and manage the sequence of operations. By using Model Builder, users can save time and ensure consistency in their spatial analysis and data management tasks, as complex processes that would otherwise require multiple steps can be executed with a single model.

The other options serve different purposes: Map Viewer is primarily for visualizing and interacting with spatial data, allowing users to create and customize maps. The Data Management Wizard assists users in managing their datasets but does not facilitate automation in the same way as Model Builder. Layout Designer focuses on arranging the map layout for presentation or printing, which is distinct from automating workflows. This differentiation underscores why Model Builder is the appropriate tool for this purpose.