What type of container is described as a rigid container for human remains?

A casket is a type of container specifically designed to be a rigid enclosure for human remains. It serves the dual purpose of protecting the deceased and providing a respectful vessel for viewing and burial. Caskets are typically made from materials such as wood or metal, which gives them their rigidity and allows them to serve as an appropriate final resting place.

The other options do not fit the description of a rigid container for human remains in the same way. An urn, for instance, is primarily intended for holding cremated remains and typically is not rigid in the same sense as a casket. A receptacle is a more general term that could refer to various containers but does not specify the structure or purpose related to human remains. A vault, while it may provide a protective environment for a casket, is not a direct container for the remains themselves; rather, it is used for burial purposes.

Understanding the function and characteristics of a casket clarifies its role in funeral practices and highlights its importance in honoring the deceased during memorial services.