Concept:Wood carving is a local craft that thrives in areas with abundant hardwood and a rich cultural heritage of carving.
Explanation:The most important wood carving centre in Nigeria is Benin City.
Benin City is located in Edo State.
Edo State lies within the rainforest belt, where fine hardwoods used for carving are readily available.
These favourable conditions made wood carving a major traditional craft in Edo State.
None of the other listed states, such as Kano, Anambra, or Osun, is as strongly identified with this craft.
Answer:D. Edo