Which suffix denotes the process of?

The suffix that denotes the process of is commonly recognized as "-y." This suffix is used in various medical terms to indicate a process, condition, or characteristic related to the root word it is attached to. For example, "surgery" implies a process involving the performing of medical operations.

The other suffixes do not convey the meaning of a process in the same way. "-lysis" signifies a breaking down or dissolution process, typically used in contexts such as "hemolysis," which refers to the breakdown of blood cells. "-tom/y" refers to cutting or incision (as in "appendectomy," which is the surgical removal of the appendix), and "-ology" denotes the study of a subject (as in "biology"), rather than a process itself. Thus, the correct answer is indeed "-y," as it encompasses various processes related to the words it modifies.