What hygienic measures must a person transporting human remains use?

The correct answer focuses on the necessity of using hygienic measures for handling infectious materials when transporting human remains. This is crucial because human remains can carry pathogens and other infectious agents that pose a health risk to those handling the remains as well as the public. Therefore, adherence to strict hygienic protocols is essential to minimize the risk of transmission of diseases.

These hygienic measures typically involve the use of personal protective equipment (PPE), proper containment of the remains to prevent leakage or exposure, and decontamination practices to ensure a safe and sanitary transport process. This approach reflects regulations put in place by health authorities and funeral service laws, emphasizing the importance of maintaining public health standards in the handling and transportation of deceased individuals.

The other options, while related to aspects of funeral service procedures, do not specifically address the primary concern of hygiene in disease prevention. Fire-resistant equipment, cold storage techniques, and cooling agents for preservation serve more specialized roles in the overall management and preservation of human remains but do not directly encompass the critical need for hygiene during transport.