What does each X indicate about the width of oversized caskets?

The correct choice highlights that each "X" indicates an increase of 2 inches in the width of oversized caskets. In the context of casket specifications, the notation is standardized to facilitate communication about sizes and dimensions. Caskets are typically designed in increments, and using a consistent measurement system helps ensure clarity for manufacturers, distributors, and consumers.

Understanding this measurement is particularly important for funeral service professionals and families making arrangements, as it allows them to select and accommodate for the appropriate casket size needed for the deceased based on individual circumstances. In this instance, the conventionally accepted increase of 2 inches per "X" allows for a manageable reference point regarding width adjustments in oversized casket options.