Final answer:
Reliability is the service quality determinant that involves performing services correctly the first time and honoring promises made to customers.
Step-by-step explanation:
The determinant of service quality that means the firm performs the service right the first time and that the firm honors its promises is reliability. Reliability refers to the ability to provide what was promised, dependably and accurately. In the context of service quality it concerns a company's consistent performance and the fulfillment of service commitments, ensuring customer satisfaction.