1)For question (1), answerbothof the options below:

1a) Does it make sense to attempt to eliminateallpollution, or is there an "optimal" amount of pollution?Explain.

1b) Supposea city releases 16 million gallons of raw sewageinto a nearby lake. The table below shows thetotal costs of cleaning up the sewage to different levels, together with the total benefits of doing so.(Benefits include environmental, recreational, health, and industrial benefits.)

Total Cost Total Benefits (thousands of (thousands of dollars) dollars) 16 million Current Current gallons situation situation 12 million 50 800 gallons 8 million 150 1300 4 million 500 1850 gallons 10 gallons 1200 2000