What process involves placing a body in a mausoleum?

The process of placing a body in a mausoleum is specifically termed "entombment." In a mausoleum, which is a above-ground structure, the body is sealed within a crypt or chamber. This differs from interment, which commonly refers to burial in the ground, typically within a grave. Disinterment refers to the act of removing a body from its grave, while exhumation is the formal process of taking a body out of the ground after burial, often for legal or investigative purposes. Hence, entombment is the correct term because it accurately describes the act of placing a body within a mausoleum, highlighting the above-ground nature of this interment method.