What should the tanker do after air refueling is completed?

After air refueling is completed, the tanker should request altitude clearance and routing changes if necessary. This is crucial because the tanker needs to ensure that it has the appropriate clearance to safely navigate to its next mission point or return to base. Communication with air traffic control is vital for maintaining airspace safety, especially after a potentially complex operation like air refueling, where spatial awareness and routes may have changed during the operation.

By requesting updated clearances, the tanker can adjust its altitude and route based on current traffic conditions or operational needs. This action aligns with standard aviation protocols and ensures that the aircraft operates safely and efficiently in tandem with other flights in the airspace.

Other options lack the necessary follow-up communication or operational procedures that support airspace safety and mission effectiveness.