Which substance was commonly used by the Babylonians for body immersion upon death?

The substance commonly used by the Babylonians for body immersion upon death is honey. In ancient practices, honey was valued not only for its sweetness but also for its preservative and antibacterial properties. It was believed to help in the preservation of the body and to facilitate the process of embalming. The use of honey in funerary practices reflects the Babylonians' understanding of preservation methods, as they sought to honor the deceased and ensure their safe passage in the afterlife.

While other substances like oils might have been used in various ancient cultures for different purposes, honey specifically held a significant place in Babylonian practices. The use of oils often relates to anointing and rituals rather than immersion, and salt was typically associated more with preservation and food than with body immersion. Wine, although culturally important, does not correlate directly with the practice of body immersion among the Babylonians. Thus, honey stands out as the correct choice due to its unique properties and significance in the context of Babylonian mortuary customs.