What function is used to display a message in Python?

In Python, the function used to display a message is the print() function. This function takes one or more arguments and outputs them to the console, which is essential for displaying information to the user or for debugging purposes. For example, calling print("Hello, World!") will output the text "Hello, World!" onto the screen.

The print() function is a built-in function in Python and is fundamental for interaction in many programming scenarios. It can format strings, accept multiple arguments, and even adjust the output's end character. The versatility and widespread applicability of print() make it a cornerstone of Python programming for outputting text.

Options such as echo(), display(), and output() do not exist as standard built-in functions in Python, which is why they are not correct choices for displaying messages.