What is the correct phraseology for issuing holding instructions when the pattern is charted?

The phraseology for issuing holding instructions when the pattern is charted should include clear and concise direction on the holding pattern, as well as an expectation for further clearance. The correct choice includes the essential elements necessary for effective communication in aviation: the specific holding fix (Magnolia VORTAC), the direction in which to hold (northwest), and provides the pilot with an expectation for further clearance which is crucial for situational awareness and operational planning.

Using phraseology like this ensures that the pilot is fully aware of the holding pattern's specifics and knows what to expect next, allowing for safer and more organized air traffic management. In aviation, clear and precise communication is vital, particularly in busy environments, and including the specific expectation of further clearance reinforces that professional standard.

The other choices lack certain necessary components for clarity and situational context. For example, simply stating "hold" without direction or expectation does not provide sufficient information, and phrases that do not specify movement directions or that lack formal clearance protocols can lead to confusion and inefficiencies in aircraft operations.