Which word best describes the range of a function?

The word that best describes the range of a function is "output." The range refers to the set of all possible values that a function can produce given its domain (the set of all possible input values). In mathematical terms, if you have a function $f(x)$, the range is the collection of all $f(x)$ values that can occur as $x$ varies over its domain. This means that the range encompasses all possible outputs corresponding to the different inputs of the function. For instance, if a function maps inputs from a certain interval and produces outputs accordingly, those resulting values are collectively known as the output or range of the function. Understanding the range is crucial for analyzing the behavior and characteristics of a function in mathematics.