Which suffixed term is used to indicate something 'pertaining to'?

The suffix that denotes something "pertaining to" is found in the choice that includes "al." This suffix is commonly used in medical terminology to create adjectives that describe a connection or relationship to a subject. For example, "muscular" indicates something pertaining to muscles, and "cardiac" refers to something pertaining to the heart.

The other terms, while also relevant in medical terminology, serve different purposes. The suffix "ectomy" refers to surgical removal, such as in "appendectomy," which means the removal of the appendix. "Algia" and "dynia" both refer to pain; "algia" suggests pain in a general sense (as in "neuralgia," which means nerve pain), while "dynia" indicates pain in a more specific context (for instance, "spinal dynia"). Hence, while they are important in medical language, they do not convey the same meaning of "pertaining to" as "al" does.