When can a body that cannot be embalmed be accepted by a common carrier?

A body that cannot be embalmed may be accepted by a common carrier if it is placed in an airtight metal casket. This is because an airtight metal casket significantly minimizes any potential leakage of bodily fluids and odors, which are concerns when transporting an unembalmed body. Such caskets are designed to create a sealed environment that helps preserve the body for a longer period, addressing health safety regulations and the interests of public health.

The other options do not provide the necessary conditions for safe transport of a body that has not been embalmed. For example, a cardboard box lacks the sealing capacity and structural integrity required to prevent leakage and odors. Transporting a body within 48 hours of death is a guideline based on time elapsed but does not provide assurance regarding the condition of the remains. Lastly, having an embalmer present does not affect the transportability of the body itself if it is not embalmed, as the core issue is the containment and safety during transport rather than the presence of a professional.