What term describes an action that causes something to happen in a program?

What term describes an action that causes something to happen in a program?

• A. Function
• B. Event
• C. Procedure
• D. Action

Answer: (B)

In programming, an event is something that happens and can trigger code to run. It’s the occurrence—like a mouse click, a key press, or a timer firing—that causes the program to respond by executing an event handler. Functions and procedures are chunks of code you call to perform a task; they don’t describe something that happens on their own, they’re invoked. Action isn’t the standard term used to describe what triggers behavior in code. So, the best answer is an event because it represents the happening that leads to code responding in the program.

In programming, an event is something that happens and can trigger code to run. It’s the occurrence—like a mouse click, a key press, or a timer firing—that causes the program to respond by executing an event handler. Functions and procedures are chunks of code you call to perform a task; they don’t describe something that happens on their own, they’re invoked. Action isn’t the standard term used to describe what triggers behavior in code. So, the best answer is an event because it represents the happening that leads to code responding in the program.