Final answer:
The sculptures at Reims Cathedral are unique for their detailed portrayal of medieval daily life, not being the work of a single artist, and not being made of marble or depicting Greek mythology.
Step-by-step explanation:
The sculptures at Reims Cathedral are unique because they included intricate details of daily life in medieval times. Monumental sculptures during the Gothic period adorned the facades of cathedrals and other religious structures, representing religious beliefs and narratives.
The sculptures at Reims are part of this gothic tradition but stand out due to the detailed portrayal of everyday medieval life within their designs. They were not carved out of marble, as marble was more commonly used during the Renaissance and classical periods.