What must accompany the delivery of a dangerous drug to ensure compliance with legal standards?

The delivery of a dangerous drug must always be accompanied by a prescription label to ensure compliance with legal standards. The prescription label serves several essential functions: it provides critical information about the medication, including the patient's name, the prescribing healthcare professional's information, dosage instructions, and any necessary warnings regarding the drug's use. This labeling is a safeguard to ensure that the drug is dispensed correctly and that the patient is informed about how to take it safely.

Having a properly labeled prescription helps to prevent misuse and ensures that the medication is used as intended. It also provides important legal documentation that verifies the legitimacy of the drug's prescription. In the context of health and safety, these labels are crucial in monitoring and managing the distribution of dangerous drugs, thereby protecting public health and safety.

The other options, while they may play roles in various processes related to medication dispensing, do not fulfill the essential requirements for compliance in the way a prescription label does. A verbal agreement lacks the official documentation needed, a money transfer receipt does not provide any details about the medication itself, and an identification card is typically not required for compliance purposes. Therefore, the prescription label is the correct and necessary component that must accompany the delivery of a dangerous drug.