The line of code `print("Hello, World!")` is a simple command used in many programming languages, including Python. It instructs the computer to display the text "Hello, World!" on the screen. This phrase is often used as a beginner's first program because it demonstrates the basic syntax of a programming language and the concept of output. In programming, the function `print()` is a built-in function that sends data to the console or terminal. The text inside the parentheses, known as a string, is what will be shown to the user. This practice helps new programmers learn how to write and execute code effectively.