Which of the following best indicates a hygienist's training under Direct Access Supervision?

The best indication of a hygienist's training under Direct Access Supervision is additional training in clinical practices and patient assessment. Under Direct Access Supervision, dental hygienists are allowed to provide certain services without the direct involvement of a dentist. This requires hygienists to have enhanced skills in clinical practices, which include hands-on techniques, patient assessment, and treatment planning.

Direct Access Supervision emphasizes the hygienist's ability to evaluate a patient's oral health and determine appropriate care independently, making additional training in these areas essential. This level of training enables hygienists to carry out procedures based on their professional judgment, enhancing their role in patient care and allowing them greater autonomy in practice.

Training focused on business operations, administrative duties, or minimal oversight by a dentist does not specifically address the clinical competencies required for the hygienist to effectively and independently manage patient care, which is central to the concept of Direct Access Supervision.