Which statement about global variables is true?

• A. Global variables are stored in cookies
• B. Global variables can only be accessed within the function where they were declared
• C. If you declare a global variable, you can access its value from any function or script block on that page.
• D. Global variables cannot be accessed by event handlers

Answer: (C)

Global variables are available everywhere in your page’s JavaScript. When you declare a variable in the global scope (outside any function, or attach it to the global object), it becomes accessible from any function or script block on the page. That means you can read or update its value from a regular function, from an event handler, or from code running later in the page, which is why the statement about being accessible from any function or script block is true.

A couple of quick clarifications help reinforce the idea: cookies are a way to store small bits of data in the browser for longer-term persistence between page loads, not the same as a JavaScript global variable. And event handlers run in the same global context, so they can access global variables just like any other function. The idea that global variables are restricted to the function where they were declared isn’t accurate, and that’s why the correct choice says you can access a global variable from any function or script block on the page.