Question

Which of the following is true of functions?

A. Programs written with functions run more quickly.
B. Functions can help remove repeated code from a program.
C. Replacing repeated code with a function will reduce the number of computations.
D. Functions are called once but can be declared many times by the computer needs to run.

Answer 1

Functions primarily help to organize and reduce redundancy in code by encapsulating a block of code that can be used multiple times. Speed and number of computations are not directly affected by functions, and functions are declared once but can be called multiple times.

Step-by-step explanation:

In the context of programming, a function is a block of organized, reusable code that is used to perform a single action. Regarding the provided options:

• B. Functions can help remove repeated code from a program. This is true because functions allow a programmer to create a modular block of code that can be called multiple times throughout the program, reducing redundancy and making the code more maintainable.
• Option A is not necessarily true as the speed of a program depends on many factors, and functions primarily contribute to organization, not speed.
• Option C is inaccurate because replacing repeated code with a function does not inherently reduce the number of computations; it organizes the code and potentially reduces code size.
• Option D is incorrect; functions are declared once and can be called or invoked multiple times as per the program's needs.