The use of a signed document stating an alternative therapy must ensure it is what?

The correct answer, which emphasizes that a signed document regarding an alternative therapy must ensure it is non-harmful, highlights a critical aspect of veterinary ethics and legal responsibility. When an alternative therapy is presented to patients or clients, it is crucial that the therapy does not pose any risk of harm to the animal.

This principle is grounded in the veterinarian's duty to provide care that prioritizes the animal's welfare and safety. By ensuring that the alternative therapy is non-harmful, the veterinarian can maintain trust and uphold professional standards, thereby protecting both the patient and the practice from potential liability issues related to the use of unproven or potentially harmful treatments.

The other options do not address this fundamental aspect of veterinary practice. For instance, while therapies can vary in terms of regulation (implying scheduling), prioritization, or cost, the paramount concern should always be the safety and well-being of the animal receiving treatment. This is why the emphasis on non-harmfulness is essential in the context of alternative therapies in veterinary medicine.