Which of the following actions would be most likely to increase the protection of ecological systems in national forests?
a. encourage timber harvesting of old-growth forests within national parksb. allow national forest managers to use revenues from timber sales as they see fitc. mandate that the government sale of logging rights in national forests be at fair market valued. make the growing, harvesting, and sale of timber the primary use of national forests

Answer is C. Mandate that the government sale of logging rights in national forests be at fair market value.

Explanation:

A national forest is a forest that is being protected or preserved on government order or decree. This means, any activity will be carried out in a national forest must be on strict supervision.

Note that, when there is a mandate controlling the sale of logging rights to be at fair market value means that people will buy at a price that is neither too high nor low. Meaning that, government won't be under compulsion to sell and people/buyers will not be under compulsion to buy.