Which term is a named, reusable group of programming instructions?

• A. Expression
• B. Frame
• C. Function
• D. Boolean

Answer: (C)

A function is a named, reusable block of programming instructions. You define it once and can run that same group of steps anywhere in your program by calling its name. Functions can take inputs, called parameters, so they can work with different data, and they can return a value when they finish. This reuse and modularity help keep code organized and avoid repeating the same steps. By comparison, an expression is just a single calculation that yields a value, not a whole block of instructions you can reuse, and a boolean is simply a true/false value.