What action should be taken to inform that contact has been made successfully?

The action of "Receiving well" signifies that contact has been successfully established and the information or communication has been acknowledged. This term is often used in law enforcement and emergency services to confirm that a message has been received clearly and that parties are on the same page regarding the communication. It serves as a form of confirmation that allows for the next steps in a process or operation to commence smoothly.

In contrast, the other choices do not serve as confirmations of successful contact. Returning to the station implies moving away from the current duties or responsibilities, which does not indicate that communication has been successfully made. Standing by suggests maintaining a readiness to receive further instructions but does not confirm any existing communication. Calling home does not relate to the acknowledgment of contact with relevant parties, making it an unrelated action in this context.