What does air transport operation involve?

Air transport operation involves the carriage of passengers or goods from one place to another, which encompasses a broad range of activities within aviation. This definition includes both commercial airlines that transport passengers and cargo airlines that move freight. The key characteristic of air transport operations is the use of aircraft to facilitate the movement of individuals or items across distances that may be impractical or impossible by other means.

The other choices reflect limitations in the scope of air transport. The first option suggests the transportation of goods exclusively, which does not encompass the entire purpose of air transport that includes passenger travel. The third option incorrectly refers to cargo shipping by ocean vessels, which falls under maritime transport rather than air transport. Lastly, only considering scenic flights in helicopters is too narrow, as it overlooks the extensive range of air transport operations that include commercial flights, cargo transport, and chartered services. Thus, the correct answer encompasses all relevant aspects of air transport operations.