What is the correct phraseology for transferring radio communications?

The phraseology "Contact (facility), frequency (if required), at (location if required)" is the most appropriate and standardized method for transferring radio communications. This phrase clearly instructs the pilot to establish contact with a specified facility. Including the frequency provides essential information, while the mention of location is useful but optional depending on the circumstances. This precise and formal structure enhances clarity and ensures that the pilot understands the intended communication, which is crucial for maintaining safety and efficiency in air traffic operations.

In aviation communications, clarity and standardization are key. This option adheres to established protocols, making it clear to pilots what actions they need to undertake. This precision prevents miscommunication, especially in busy airspace or during complex operations.

Other options may lack the same level of clarity or may not follow the established phraseology standards used by air traffic control, which can lead to confusion or misinterpretation. Therefore, option B stands out as the most effective and recognized way to articulate the transfer of radio communications.