Which of the following statements is false? A. A function is a block of code that performs a specific task B. Functions allow programmers to break large and complex problems into small and manageable tasks C. Functions allow programmers to use existing code to perform common tasks D. Functions can be called, or invoked, only once in a program E. Programmer-defined functions can be either value-returning or void

The correct answer is D. Functions can be called, or invoked, only once in a program.

A function is a block of code that performs a specific task. Functions allow programmers to break large and complex problems into small and manageable tasks. Functions also allow programmers to use existing code to perform common tasks. Programmer-defined functions can be either value-returning or void.

A function can be called, or invoked, multiple times in a program. This is because a function is a reusable piece of code. When a function is called, the code inside the function is executed. The value returned by the function, if any, is then used in the calling code.

Here is an example of a function in Python:

def add_numbers(x, y):
return x + y

This function takes two numbers as input and returns their sum. The function can be called multiple times in a program, as shown in the following code:

x = 10
y = 20
z = add_numbers(x, y)
print(z)

This code will print the value 30, which is the sum of 10 and 20.