Which of the following is NOT a location where application logic exists?

The correct answer pertains to the nature of what constitutes application logic in a software environment, particularly in the context of Guidewire. Application logic typically refers to the rules and operations that govern the behavior of the application and can be found in different layers of a program.

Gosu rules are indeed a location where application logic exists, as they define the business rules and calculations that dictate how data is processed within the application. User Interface workflows also contain logic in terms of how users interact with the application and how data is managed at the interface level.

In contrast, class names serve as identifiers for specific structures within the code, such as defining a blueprint for objects, but they do not themselves contain logic or dictate behavior. Entity names relate to the data model, representing the types of objects or records that the application manages. While they are critical for defining the structure of data, they do not directly embody or express the application logic.

This distinction highlights that while many aspects of the application can contain logic, class names function primarily as labels without direct implementation of business rules or behaviors.