Answer:
The best option is to levy a tax on the producers of paper products and use the tax revenues to clean up the river. Option D
Explanation: It is only fair that the perpetrators of the pollution of the Layzee River be fined or taxed as the case may be.
This tax will achieve two things:
1. It will stop them from polluting the River and seek other better ways of disposing their waste.
2. The revenues gotten from the tax will be used to clean up the river, instead of making the hydroelectric power generating plants bear the costs.