Answer:
The primary cause behind Nigeria experiencing widespread water pollution in the "Niger River Delta" region is the oil spills that occur there frequently.
Step-by-step explanation:
- The Niger River Delta is a huge resource of crude oil that is presently producing around 2 million barrels of oil per day.
- The extraction activities in this area are not carried out using the best equipment that offer least spillage. Thus, oil spill incidents are frequently encountered in this region.