Which of the following is not true of air transport?

The option that is not true of air transport is "it operates normally irrespective of weather conditions." Air transport can be affected by weather conditions such as fog, thunderstorms, hurricanes, and other adverse weather conditions, which can lead to flight delays or even cancellations for the safety of passengers and crew. However, air transport is still considered one of the fastest and most efficient modes of transportation for both goods and people, especially for long distances or when time is critical. It is commonly used to transport high-value goods and medical supplies, such as blood, organs, and vaccines, due to its speed and reliability. While air transport may have higher operating costs compared to other modes of transport, it is often preferred for its convenience and speed. Airlines usually strive to maintain their schedules, but weather and other unforeseen circumstances may sometimes cause delays or cancellations.