The utility of a good or service:

A) is synonymous with usefulness.
B) is the satisfaction or pleasure one gets from consuming it.
C) is easy to quantify.
D) rarely varies from person to person.

Satisfaction

A measure of how goods and services supplied by a company meet or surpass customer expectation.

Pleasure

A state of feeling pleased or satisfied, often resulting from the fulfillment of a desire or need.

Synonymous

Having the same or nearly the same meaning as another word or phrase in the same language.