What age range defines a child according to aviation regulations?

The definition of a child in aviation regulations is crucial for understanding various safety and operational protocols concerning passengers. The correct age range, defined as from 2 years to 11 years and 364 days, is important for several reasons, primarily relating to the regulation of seating requirements, safety harness use, and fare structures for airline travel.

Children categorized within this range typically require specific safety considerations when traveling by air. This includes the need for appropriate seating arrangements, as airlines have regulations that differentiate between infants (often classified as those under 2 years) and children, who must be properly secured within the aircraft. Regulations are designed with the understanding that as children grow, their physical and developmental needs differ significantly, necessitating tailored safety measures up until the age that essentially spans to their 12th birthday.

The other options either classify age ranges incorrectly or misalign with standard definitions applied in aviation contexts. The specificity of the age range up to 11 years and 364 days aligns with consistent international practices, ultimately ensuring the safety and comfort of young passengers while adhering to regulatory standards.