When someone is engaging in more extensive processing of information for the benefit of memory, that person is most likely using as a memory strategy.

Elaboration.

Explanation:

Elaboration is a strategy which involves assigning meaningful information to something you are trying to remember, which in turn would make the non-meaningful information easier to remember.

An elaboration strategy is where the student uses elements of what is to be learned and expands them. The student expands the target information by relating other information to it

Elaboration strategies connect information to be learned with information that students already know. This connecting takes stress off of working memory, because connections create efficiency of learning and memory.

it's