Which option is NOT a valid method for transmitting prescriptions?

The correct answer is based on the requirement for electronic prescriptions to undergo proper authentication. In modern pharmacy practice, electronic transmission of prescriptions must comply with regulations that ensure the security and integrity of the patient's information. This includes measures such as encryption and confirmation of the sender's identity to protect against fraud and unauthorized access.

When electronic prescriptions are sent without authentication, they do not meet the necessary standards set by regulatory bodies, making such transmissions invalid. This safeguards the entire medication dispensing process, ensuring that the prescriptions are legitimate and linked to a verified prescriber.

Other methods of transmitting prescriptions, such as faxing by an authorized practitioner, hand delivery by the patient, and prescriptions sent directly by the practitioner's agent, adhere to established practices and are recognized as valid methods. They involve either direct communication from a licensed practitioner or a secure and supported format, thus ensuring that the prescription can be trusted by the pharmacy.