In a program, when there is a need for a particular set of tasks to be performed more than once, those instructions are often written into a ________________.

• A. Pseudo code
• B. Calculation
• C. Subroutine
• D. Comment line

Answer: (C)

When you need to perform the same set of tasks more than once, you place that code into a subroutine. A subroutine is a named block of executable instructions that can be called from various parts of the program, often with parameters to tailor its behavior. This encapsulation promotes code reuse, improves readability, and makes maintenance easier since changes are made in one place. Pseudo code is just planning text, not executable; a calculation is a single arithmetic operation; a comment line is non-executable notes for humans. So the reusable, executable block is a subroutine.