The correct answer is A. Elaboration
Explanation:
A memory strategy refers to a technique used to facilitate the process of remembering informing. There are multiple strategies use to memorize different types of information and that adapt to each individual. This includes chunking technique that involves breaking information into units; imagery that consists in creating mental images; selective attention that is about focusing on important points and elaboration that includes relating new information to meaningful information including different words, movements, examples, etc. This implies, in the case of Chuck you are recommending to him an elaboration strategy because the technique to memorize information about chemistry class involves relating information to examples/ previous knowledge or elaborating on the information he wants to learn.