The type of value that a function sends back to the function that calls it is known as its _____

The correct answer is: B. return value

A return value is the value that a function returns to the caller after the function has finished executing. The return value can be any type of value, such as an integer, a string, or an object.

A type is a set of values that a variable can store. For example, the type of an integer variable is the set of all integers. The type of a string variable is the set of all strings.

Reference data is a type of data that stores the address of another piece of data. For example, a pointer is a type of reference data that stores the address of a variable.

A sentinel is a special value that is used to indicate the end of a data set. For example, a sentinel value for a list of numbers might be -1.

Here is an example of a function that returns a value:

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

In this example, the function add_numbers takes two numbers as input and returns their sum.

Here is an example of a function that does not return a value:

python
def print_message():
print("Hello, world!")

In this example, the function print_message does not return a value.