Which component of a casket serves as the foundation for the deceased human remains?

The bed of the casket serves as the foundation for the deceased human remains. It provides a stable and supportive area where the body is placed during memorial services and burials. This component is designed to accommodate the shape and structure of the human body while ensuring that it is presented in a respectful manner. The bed typically has padding and is crafted for comfort, allowing for a dignified appearance during viewings or services.

In contrast, the body refers to the deceased person, the bench is a structure that supports the casket but does not specifically denote the area for the body, and the block typically refers to smaller components used in casket construction, often related to structural support rather than serving as the resting place for the remains. Thus, the bed is specifically intended for this purpose, making it the correct answer.