Which of the following is true regarding the scheduling of examinations?

The statement about examinations being scheduled by appointment only is accurate because it emphasizes the need for candidates to secure their examination time slot in advance. This approach allows for better organization and management of testing resources, ensuring that facilities and staff are appropriately allocated for each examination session. By requiring appointments, the examination bodies can maintain controlled environments, avoid overcrowding, and provide adequate support for each candidate during their assessment.

Scheduled appointments also facilitate a smoother process for both the candidates and the administrators, allowing candidates to prepare mentally for their test day while ensuring that testing centers are prepared to accommodate them. This method minimizes wasted resources and maximizes efficiency, which is critical in high-stakes testing environments.

In contrast, the other options suggest more open-ended or fixed schedules that do not align with typical practices for professional examinations, where controlled environments and specific time slots are crucial for maintaining integrity and focus during the assessments.