Final answer:
A pilot must maintain two-way radio communication with ATC when on a VFR flight within a Class C terminal control area, and follow their instructions unless there's specific authorization or an emergency.
Step-by-step explanation:
When operating a VFR flight within a Class C terminal control area, a pilot must maintain two-way radio communication with ATC. This involves establishing communication with the appropriate air traffic control facility before entering the airspace and then following any provided instructions. If a pilot does not establish communication or receive clearance to enter the airspace, they must avoid it, unless there is an emergency or they have specific authorization. These procedures are designed to ensure safety within the airspace by coordinating traffic and providing separation between aircraft.