Is it true that built-in JavaScript functions cannot be mixed in with other HTML code unless you use the "script" tag?

Built-in JavaScript functions indeed require the use of the "script" tag to be executed within an HTML document. The "script" tag serves as a container for the JavaScript code, allowing the browser to interpret and run the code embedded alongside HTML. Without this tag, the HTML parser would not recognize the JavaScript syntax, and as a result, the code would not function as intended.

This structure is a standard practice that ensures separation of content (HTML) and behavior (JavaScript), promoting better organization and maintainability of code. While JavaScript can interact with HTML elements using methods like document.getElementById(), the code must still be wrapped in a "script" tag to be interpreted properly by the browser.

Other options may suggest scenarios where mixing might be possible, but they do not align with how HTML and JavaScript are designed to work together in a web environment.