Final answer:
The threshold characterized in the Grave-dressing phase is the burial of a core group of individuals, known as primary deposits, whose remains display relatively good anatomical articulation.
Step-by-step explanation:
The threshold characterized in the Grave-dressing phase is the burial of a core group of individuals, known as primary deposits, whose remains display relatively good anatomical articulation. These burials are accompanied by secondary deposits of bones, which are often disconnected from the primary remains. The disposition of these remains adheres to Jewish burial customs and provides information about the time elapsed between the death of an individual and their final burial.