Which search engine optimization technique involves sending data describing your web site to the search engines and then paying a fee to ensure that your pages are part of the site's engine index?

Search feeds.

Explanation:

Search feeds seem to be the search engine optimization strategy includes transmitting information to those of the search engines that explaining the user's website and afterward charging the fee to assure that is pages would be included in the site engine listing.

So, the following answer is correct according to the given scenario.