What type of operator could be selected by the station owner?

The correct choice reflects that the station owner can select any qualified amateur operator to manage and use the station. In the context of amateur radio, a qualified amateur refers to someone who holds a valid amateur radio license, indicating that they have met the necessary requirements set by the regulatory authority. This allows them to operate within the guidelines of amateur radio regulations.

Selecting any licensed operator provides a broader interpretation, as it doesn't specifically define the operator's qualifications in terms of experience or operational skills that are often necessary for certain types of station equipment or modes of communication. Likewise, the idea of only selecting experienced operators or restricting selection to paid professionals significantly limits the potential pool of operators and overlooks the inclusion of dedicated hobbyists and those who might have excellent skills and knowledge as licensed amateurs but may not have professional status in the field. Hence, the focus on qualification through a valid amateur license is crucial, and this understanding is reflected in the correct answer.