Which of the following is a medical study related to a specific discipline?

The suffix "-logy" is derived from the Greek word "logos," which means "study" or "discourse." It is commonly used in medical terminology to denote a field of study or a branch of knowledge. For instance, "biology" refers to the study of living organisms, and "dermatology" pertains specifically to the study of the skin.

In the context of the question, "-logy" signifies a medical study related to a specific discipline, making it the correct choice. Other options such as "-genesis," which refers to the origin or mode of formation of something, "-stasis," which indicates a state of stability or equilibrium, and "-oma," which denotes a tumor or mass, do not describe a systematic study or field of knowledge in the way that "-logy" does.