Final answer:
The answer is D. Taste testing.
Step-by-step explanation:
The answer to the question is D. Taste testing.
The question is asking which of the options is not a safety program testing requirement for the AEFC. AEFC stands for API Engine Fuel Control. In the context of safety program testing requirements, visual inspection involves looking for any visible damage or defects, functional testing checks if the system is working properly, and pressure testing ensures that the system can withstand the required pressure. Taste testing is not relevant to safety program testing requirements for AEFC, as it does not pertain to the safety functioning or performance of the system.