Final answer:
In Luba Culture, the figures kept at the door represent purity and renewal and play an important role in maintaining harmony and balance in the society.
Step-by-step explanation:
In Luba Culture, the figures kept at the door by both chiefs and diviners represent purity and renewal. These figures are associated with rituals and ceremonies that aim to cleanse and renew the spiritual energy of the community. They play an important role in maintaining harmony and balance in the society.