Event-driven programming is characterized by which behavior?

Event-driven programming is characterized by which behavior?

• A. The program is activated by events such as button clicks.
• B. The program runs in a strict linear sequence without interaction.
• C. It does not respond to user input.
• D. It requires a relational database.

Answer: (A)

Event-driven programming centers on reacting to events. The program defines handlers that run in response to events like user actions (for example, button clicks) or system notifications. Rather than a fixed, linear sequence of steps, the program sits idle in an event loop, waiting for events and dispatching the appropriate response when one occurs. This is why the behavior described—being activated by events such as button clicks—best captures how event-driven systems operate. The other statements don’t fit because a linear, non-interactive flow describes non-event-driven programs, not those that respond to user input. Saying it does not respond to user input is the opposite of how event-driven programs work. Requiring a relational database isn’t a defining trait of this programming model; storage choice is independent of whether a system uses event-driven logic.

Event-driven programming centers on reacting to events. The program defines handlers that run in response to events like user actions (for example, button clicks) or system notifications. Rather than a fixed, linear sequence of steps, the program sits idle in an event loop, waiting for events and dispatching the appropriate response when one occurs. This is why the behavior described—being activated by events such as button clicks—best captures how event-driven systems operate.

The other statements don’t fit because a linear, non-interactive flow describes non-event-driven programs, not those that respond to user input. Saying it does not respond to user input is the opposite of how event-driven programs work. Requiring a relational database isn’t a defining trait of this programming model; storage choice is independent of whether a system uses event-driven logic.