Which of the following is NOT a responsibility of the Certificate of Fitness holder?

The correct answer highlights an important distinction regarding the responsibilities of a Certificate of Fitness holder. A Certificate of Fitness is primarily concerned with compliance around safety and operational standards specific to fuel handling and dispensing. One of the fundamental responsibilities includes notifying authorities if there is any hazardous material release, which relates directly to safety regulations. Additionally, it is crucial for the Certificate holder to ensure that fuel dispensing operations are executed correctly, adhering to safety protocols and guidelines.

While customer service is an essential aspect of gas station operations, it does not fall under the specific responsibilities designated to a Certificate of Fitness holder. This role is more focused on safety and regulatory compliance rather than on managing customer service activities, which can typically be handled by other staff members at the gas station. Keeping the certificate available for inspection aligns with the legal requirements for assurance of compliance; this is essential for maintaining operational legitimacy and safety compliance inspections.

Thus, the differentiation in responsibilities underlines that customer service supervision, while important, is not encompassed within the scope of the Certificate of Fitness holder's duties.