According to regulations, what must a remote pilot in command (PIC) do to operate within Class C airspace?

To operate within Class C airspace, a remote pilot in command (PIC) must receive Air Traffic Control (ATC) authorization. Class C airspace has established parameters that require pilots to communicate with ATC for safety and traffic management reasons. This involves establishing two-way radio communication with the appropriate ATC facility before entering the airspace. Gaining this authorization ensures that the remote pilot is aware of any potential traffic and can share their operational intentions with ATC, which is crucial for maintaining a safe airspace environment.

Other options, like filing a flight plan or using a visual observer, are not required specifically for Class C airspace. While these may be important in different contexts or operations, they do not directly enable a remote pilot to enter Class C airspace. Notifying local authorities is not a requirement for operating in this type of airspace either, emphasizing the importance of ATC authorization as the key regulatory step.