The prefix "sub-" means which of the following?

The prefix "sub-" is derived from Latin, where it means "under" or "below." This prefix is commonly used in medical terminology to indicate a position that is lower or beneath something else. For example, in the term "subcutaneous," it refers to tissue located under the skin. This prefix can also be seen in other contexts, such as "submarine," which means below the surface of the water.

Understanding the meaning of "sub-" is essential, as it helps in deciphering various medical terms and their implications in a clinical setting. In contrast to the other options, which suggest positions above, through, or in front of, "sub-" specifically conveys a position that is lower or beneath, making it the correct choice in this context.