The correct option is D Wiping out of Nigeria's mangrove forests
The oil extraction business has harmed normal life in Nigeria. The oil spills and the extraction process have had an impact on soil fertility. It has contaminated the water bodies of Nigeria and destroyed its mangrove forests. Five to ten per cent of Nigeria's mangroves have been destroyed by clearing or oil spills. The oil also contaminated the drinking water in many parts of the country. It has also destroyed crops, aquaculture and led to a fall in local fish production as well.