What is the maximum number of infants on board according to the seat belt regulations?

The maximum number of infants allowed on board according to seat belt regulations is based on safety protocols that dictate how many infants can be safely accommodated given the aircraft's design and safety features. Each infant needs to be secured in an appropriate manner, as they do not occupy a designated seat but must still be safely managed during all phases of flight.

In many airlines, this number is limited to ensure that there are enough safety measures in place, such as available crew members to assist in emergencies, and to ensure that the safety equipment, including life jackets and oxygen masks, can accommodate all individuals on board. The specific number of infants typically allowed, in this context, is eight, which aligns with safety guidelines ensuring that safe ratios of infants to adults or cabin crew are maintained.

The other options reflect numbers that would exceed standard safety configurations for infants and do not align with the typical operational guidelines set by regulatory authorities in the aviation industry.