Concept:Tin mining in Nigeria is historically concentrated on the Jos Plateau, making it the main area affected by environmental degradation.
Explanation:The Jos Plateau is located in the North-Central highlands of Nigeria.
It is rich in mineral resources, especially tin.
Tin mining activities involve excavation, dredging, and the use of heavy machinery, which disturb the land surface.
These activities lead to soil erosion, destruction of vegetation, and the creation of mining ponds and waste dumps.
As a result, the Jos Plateau has experienced severe environmental degradation over many years of tin mining.
Other highlands like the Western, Eastern, and Obudu plateaus are not associated with large-scale tin mining.
Answer:C. Jos Plateau