Which category of activities focuses on retrieving information from GUI elements?

The category that focuses on retrieving information from GUI elements is output activities. These activities are specifically designed to extract or fetch data from various graphical user interface components, such as text boxes, labels, or data grids. When utilizing output activities, the automation process can capture the state of these elements, enabling further actions based on the retrieved values.

In contrast, input activities are primarily concerned with sending or entering information into GUI components rather than retrieving it. Containers are used to group activities logically within a workflow, aiding in organization and control flow but not directly related to data retrieval. Synchronization activities are used to manage timing and ensure that operations are performed in the correct order, especially in scenarios involving multiple activities that depend on the state of the GUI.

Thus, output activities are the correct category for retrieving information, as they are explicitly designed for that purpose.