What does a form reset button do?

A form reset button is designed specifically to clear the content of the form. When clicked, it resets all the input fields in the form to their default values. This means that any user-entered data is removed, allowing users to start over with a fresh form. It is particularly useful in long forms where a user might want to clear all fields quickly rather than deleting input manually.

The other functionalities described in the other choices do not pertain to what a reset button does. A reset button does not submit the form data, as that is a separate function typically handled by a submit button. It also does not provide any error messages; that function falls under form validation processes, which check for incorrect inputs after submission. Additionally, a reset button does not change the form layout; it only interacts with the values contained within the input fields.