Which of the following is TRUE regarding the dispensing of controlled substances by a prescriber?

The correct answer emphasizes that prescribers are allowed to dispense controlled substances, but this is subject to specific conditions and regulations. In many jurisdictions, prescribers, such as physicians and dentists, can dispense medications, including controlled substances, as long as they comply with federal and state laws. These regulations typically require that the prescriber is appropriately licensed and follows the guidelines for record-keeping, labeling, and patient education.

The specific conditions could include having a valid practitioner-patient relationship, ensuring that the medication is necessary for the patient's treatment, and adhering to limits on the quantities dispensed. Therefore, this answer reflects the reality of medical practice where controlled substances can be dispensed by prescribers while still being tightly regulated to ensure safety and compliance with law.

In contrast, the other options suggest restrictions that do not capture the entire picture of prescriptive authority in relation to dispensing controlled substances. The notion that prescribers can only dispense during office hours or must only dispense in emergencies isn't accurate given the regulatory frameworks that allow for more flexibility under specific guidelines.