Which pollution control strategy has the highest administrative costs? 

A)  user fees 
B)  regulation 
C)  tradable pollution rights 
D)  subsidies for beneficial actions

Administrative Costs

Expenses related to the general operation of an organization, including salaries of non-sales personnel, rent, utilities, and supplies.

Tradable Pollution Rights

Environmental policy tool allowing companies or entities to buy, sell, and trade emissions allowances, aiming to control and reduce overall pollution in a cost-effective manner.

Regulation

A rule or directive made and maintained by an authority to control or manage activities, often used in the context of government policies.