Why can a corpse not be left alone?

A corpse should not be left alone for several reasons. Firstly, it is important for legal and investigative purposes, as leaving a body unattended can hinder the proper collection of evidence in cases of suspicious death. Additionally, there are health and safety concerns, as decomposition begins soon after death, potentially attracting pests and posing biohazard risks. Lastly, cultural and ethical considerations often dictate that the deceased should be treated with respect and dignity, which includes not leaving them unattended.