Which of the following links can be used to update a Rule Input?

The choice of a!dynamicLink() as the correct link to update a Rule Input is based on its functionality of dynamically referencing and modifying input parameters in the context of an Appian interface. This link allows for a dynamic interaction where the user can provide input or modify existing values that are passed into the rules defined for an interface.

a!dynamicLink() is designed to change values that are tied to user interactions within the application through an interface or process model. By leveraging this link, developers can create intuitive user experiences that respond to user actions, updating inputs seamlessly.

In contrast, other links such as b!staticLink(), c!imageLink(), and d!actionLink() are utilized for different purposes. For example, a static link renders a fixed URL that does not change based on user input, while an image link is primarily used for displaying images rather than updating inputs. An action link can trigger a specific action or process but does not inherently focus on modifying Rule Inputs in the way that a dynamic link does. Thus, the dynamic nature of a!dynamicLink() makes it the appropriate choice for updating Rule Inputs in Appian’s environment.