Concept:Ogbunike cave is a well-known tourist site in southeastern Nigeria.Explanation:The cave is located in Ogbunike, a town in Anambra State.It lies close to Onitsha, a major commercial city in the same state.Therefore, the correct option is the one that places the cave near Onitsha in Anambra State.Answer:C. Onitsha in Anambra State.