Which of the following are main components of a class diagram?

The correct choice highlights the essential elements that are typically represented in a class diagram in object-oriented design. A class diagram primarily focuses on illustrating the structure of a class and its relationships with other classes.

Behaviors refer to the functions or methods that define what the class can do. These are typically represented in the class diagram to show how the class interacts with others or performs specific actions based on the data it contains.

Attributes represent the data or properties of a class. They define the state of the objects that are instantiated from that class. Including these in a class diagram is crucial, as they help convey the information that is stored within an object.

Names, often the name of the class itself, provide a clear label for understanding what each class represents. This is foundational for anyone reading the diagram, as it helps identify and differentiate between various classes.

Together, behaviors, attributes, and names create a comprehensive overview of a class, aiding in understanding its purpose and how it fits into the overall system design. The other options fail to accurately address these fundamental components, as they either mix unrelated concepts or overlook critical aspects of class representation.