Captcha Code Plugin Code Question

The 1st two lines are the same, one is simply wrapped in a <?php...?> block, which is needed to insert the code amongst HTML. One of these versions will be inserted where ever the contact form elements are generated. It may be part of page content or part of page template, it’s hard to know which from HTML alone.

Same for the other two lines, they are the same except for the <?php...?> block. One of these versions is inserted in whatever content is sent in response to the submitted form. It will need to be modified so that the actual acceptance and confirmation does not occur except when the inserted if() logic fails, which is when the captcha is properly completed.