Which of the following best describes the word "versatile"?

The word "versatile" refers to the ability to adapt or be adapted to many different functions or activities. Therefore, describing someone or something as "capable of doing many things well" captures the essence of versatility. This definition implies a breadth of skill or application beyond a narrow focus, which aligns perfectly with how "versatile" is used in various contexts, whether discussing a person's talents, a tool's capabilities, or a process.

In contrast, the other options convey a more restricted or negative meaning. For example, being "specialized in a single field" indicates a lack of range, while "limited in function" directly opposes the idea of versatility by suggesting constraints. Lastly, "unreliable in performance" implies inconsistency and does not relate to versatility at all. Thus, the definition that best encapsulates the meaning of "versatile" is the one that highlights broad capability and proficiency across multiple areas.