Final answer:
The title of the bronze plaque depicting Oba Ohen is Equestrian Oba and Attendants.
Step-by-step explanation:
The title of the bronze plaque depicting Oba Ohen is Equestrian Oba and Attendants. This plaque is part of a sequence of plaques that visually document and tell the story of the Oba's dynasty and royal lineage. The Benin kingdom in present-day Nigeria is famous for its exquisitely detailed bronze plaques made using the lost-wax method.