Which activity is used primarily for clicking on an element on the screen?

The activity primarily used for clicking on an element on the screen is Click Image. This activity enables the automation process to interact with graphical elements by recognizing them visually. When using Click Image, the automation tool captures a screenshot of the target element and searches the screen for an image that matches it, thereby allowing it to simulate a mouse click on the identified element. This is particularly useful in situations where traditional methods of element identification, like using the button or UI automation, may not be effective due to dynamic interfaces or custom controls.

Click Image is specifically designed for visual recognition, making it a versatile tool when working with applications that might not expose their controls in a straightforward manner. In contrast, while Click Button can also perform clicking actions, it is intended for predefined button elements within applications that expose their UI structures to automation tools. Therefore, Click Image remains distinct for cases where visual recognition is necessary.

Invoke Workflow is intended for executing another workflow within the existing automation workflow and does not specifically pertain to clicking elements. Type Into is used for entering text into input fields rather than interacting with graphical elements. Hence, Click Image is the most appropriate choice for the question regarding clicking on elements visually identified on the screen.