Which term describes examining the similarities and differences between various subjects?

The term that best describes examining the similarities and differences between various subjects is "compare and contrast structure." This approach is explicitly focused on highlighting how two or more elements are alike or different, allowing for a deeper understanding of the subjects being analyzed. This structure helps readers critically evaluate the subjects by organizing information in a way that makes relationships and distinctions clear.

In the context of writing, using a compare and contrast structure provides a framework for discussing relevant attributes of the subjects, making it easier to convey insights and conclusions drawn from the analysis. It is a common technique in various forms of writing, including essays, reports, and discussions where the goal is to elucidate the complexities of the subjects involved.

The other choices represent different writing structures: analytical structure typically involves breaking down information into parts for a detailed examination, expository structure is centered around explaining a topic or providing information without comparison, and narrative structure focuses on telling a story or recounting events in a linear fashion. Each of these serves distinct purposes but does not specifically center on the act of comparing and contrasting, which is the essence of the correct choice.