Which service in MBO is considered a "one-time" use?

The correct answer is the "Guest pass." This service allows prospective members to experience a workout at Orangetheory Fitness without committing to a membership. It is intended for individuals who have never attended a session before and is typically used just once per person to introduce them to the studio experience. Each guest pass provides an opportunity for newcomers to join a class and understand the benefits of Orangetheory fitness without any financial obligation.

The other options, while beneficial, do not fit the criteria of being a one-time use. The complimentary training session might be offered as an incentive to new members, and it could potentially be used more than once under specific circumstances, especially if there are promotional events. "Preferred Guest" typically refers to a membership or status that offers ongoing benefits rather than a single-use opportunity. The "First-time visit" may not be accurately categorized as one-time, as this phrase could refer to several initial attendances under different promotional conditions or resets after a certain period of inactivity.