Final answer:
When an airline is engaged in common carriage, it has a duty to exercise the highest degree of care. This means the airline must ensure the safety and well-being of its passengers by taking necessary precautions and adhering to safety regulations.
Step-by-step explanation:
In the context of common carriage in the airline industry, when an airline is engaged in common carriage, it has a duty to exercise the highest degree of care. The highest degree of care refers to the airline's responsibility to ensure the safety and well-being of its passengers, which includes taking necessary precautions to prevent any harm or injury during the course of transportation.
For instance, the airline must maintain its aircraft in a safe condition, provide adequately trained and qualified pilots and crew, and adhere to all safety regulations. It must also take measures to protect passengers from any foreseeable risks, such as turbulence or faulty equipment.