Who must affirm that a new operator received training in the safe operation of the cremation chamber?

The correct answer is the Responsible Owner because this individual holds the ultimate accountability for the operations of the business, including compliance with safety standards and protocols. In the context of cremation operations, ensuring that a new operator is adequately trained in the safe operation of the cremation chamber is a critical responsibility.

The Responsible Owner's affirmation is essential as it signifies that the owner has verified that training has been completed and that the new operator is competent to handle the equipment safely, thereby protecting both staff and the facility as a whole. This role typically encompasses oversight of operational training procedures and ensuring they align with regulatory expectations.

The other options do not align with the responsibilities or authority required to affirm training compliance, as the former operator may have a limited perspective on the training of the new operator, while a marketing manager may not possess the technical knowledge required to assess operational safety. Additionally, while a veterinarian has important responsibilities in numerous aspects of veterinary practice, their focus is often on animal welfare rather than operational training in specific equipment like the cremation chamber.