如何根据选定的单选按钮更改html段落文本？

I have been developing a course management system with PHP and MySQL. I recently ran into a problem. I created a basic webpage (EditCompletion.php). Basically, what I want to do, is have a link on that page that opens a jQuery Modal Window and within that modal window should be 3 radio buttons, a small description paragraph (which changes when a new radio button is clicked), and a submit button. This is how I want it to work:

I want to be able to select a student (CERTAIN SELECTED STUDENT) and a lesson (CERTAIN SELECTED LESSON) then I want to be able to click the link on EditCompletion.php that then opens the jQuery Modal Window. I want to then be able to choose from the following options:

Unlock - (Description Paragraph - Are you sure your want to unlock (CERTAIN SELECTED LESSON) for (CERTAIN SELECTED STUDENT))?

Exempt - (Description Paragraph - Are you sure you want to exempt (CERTAIN SELECTED STUDENT) from (CERTAIN SELECTED LESSON))?

Master - (Description Paragraph - Are you sure you want to master (CERTAIN SELECTED STUDENT) out of (CERTAIN SELECTED LESSON))?

THE CERTAIN SELECTED will show up as the CURRENT SELECTED [WHATEVER]. For example, SELECT STUDENT JOHN DOE and LESSON 1 on EditCompletion.php and then click the link to open the modal. I want to select an option using radio buttons, and upon clicking "save", the MySQL database would be updated.

something like this?

<?php 
            for($samples as $sample){
        echo '<a onclick="return (confirm(\'..message here.. for '.$sample['name']. 'about'.$sample['lesson'].'\'))? true: false;">Action</a>';

            }
        ?>