A public good like national defense can best be paid for by: Question 10 options: Establishing a "user tax" paid by those individuals and firms who use the public good. Taxing the general public by using an "ability to pay" tax. Relying on voluntary contributions from publicly-minded individuals and firms. Taxing the firms that earn profits from producing the public good. Taxing the rich because they use the public good more than the rest of the population