Which term best describes the usefulness of a particular tool or resource?

The term "utility" specifically refers to the usefulness or practical value of a tool or resource in fulfilling a need or providing a service. It embodies the concept of how effective and beneficial a particular item is in a given context. For example, in economics, utility is often used to assess consumer satisfaction and the value derived from goods and services.

In contrast, "advantage" pertains to a favorable condition or circumstance that gives someone or something a superior position. While an advantage can imply usefulness, it does not encapsulate the comprehensive understanding of a tool's utility.

"Functionality" refers to the range of operations that can be performed by a tool or resource, focusing on how well it operates rather than its overall usefulness. It describes capabilities instead of value.

"Benefit" denotes a positive outcome or gain resulting from a particular tool or resource but does not capture its essential usefulness. A benefit might arise from utility, but it does not inherently express the actual effectiveness of the tool.

Therefore, "utility" is the most precise term to describe the usefulness of a particular tool or resource, as it directly addresses the practical application and value it provides.