What is the term for the final performance of services regarding a deceased body?

The term "Final Disposition" refers specifically to the last set of services performed concerning a deceased body, which may include burial, cremation, or another method of handling the remains. This term encompasses the entire process following death, culminating in the permanent placement of the body. It signifies that all necessary preparations and formalities have been completed, allowing for final resting arrangements to be made.

Other terms present in the options, such as postmortem care, embalming, and ritualistic preparation, refer to different stages or aspects of handling a deceased body. Postmortem care involves the immediate care and preparation of the body after death, which might include cleaning and dressing. Embalming is a specific procedure aimed at temporarily preserving the body for viewing or burial, while ritualistic preparation refers to culturally specific practices surrounding the treatment of the body that may occur before final disposition. In contrast, Final Disposition encompasses the whole process, making it the most accurate term for the concept outlined in the question.