What routine service is provided under Zing's hearing benefits every year at no copay?

The correct choice is the hearing exam. This routine service is integral to Zing's hearing benefits as it encompasses a comprehensive evaluation of an individual’s hearing ability. A hearing exam typically includes testing a person's ability to hear sounds at various frequencies and intensities, and it often involves a health professional conducting various specific tests to ensure accurate assessment.

While the terms hearing test, hearing evaluation, and hearing assessment may seem similar, they may carry nuances in how they are administered or in their scope. For instance, a hearing test is generally a component of the broader hearing exam and may focus on specific aspects of auditory function, whereas a hearing evaluation can imply a more detailed procedural approach that goes beyond the basic scope of what a hearing exam covers. Thus, the term "hearing exam" aligns best with the annual routine service characterized by thoroughness and comprehensive assessment without any associated copay.