Which of the following represents the term "Year(s) Old" in abbreviation?

The abbreviation for "Year(s) Old" is represented as "y/o." This format effectively conveys the concept of expressing an age or duration in years, commonly used in medical documentation and contexts where age is relevant. The "y" stands for "year," while the slash (/) is used to indicate "old," providing a clear and concise notation.

In some other contexts, different abbreviations might be considered, but "y/o" has become the standard within many medical and educational settings to maintain clarity and consistency when documenting age-related information. This makes it easier for healthcare professionals and educators to communicate effectively. Other abbreviations do not have the same widespread acceptance or clarity, making "y/o" the preferred choice.