Which of the following are elements of a state diagram?

A state diagram is a visual representation used in software engineering and systems design to depict the states of an object and the transitions between those states. Among the elements listed, the correct components of a state diagram include an event, an initial state, and state transitions.

Events trigger transitions from one state to another. Each transition occurs in response to specific events, indicating what prompts a change in state. The initial state represents the starting point of the state machine, outlining where the process begins. State transitions illustrate how the object moves from one state to another, showing the conditions and events that cause these transitions.

While interaction is a broad concept referring to the communication and behavior between different components or users of a system, it does not specifically pertain to the elements that make up a state diagram. Instead, a state diagram focuses on the specific states and transitions that an object undergoes in response to events. Thus, the elements of a state diagram are crucial for understanding how an object changes state over time based on different events.