They are interested in the process of change
I believe the answer is D. Lumber is an important resource in Russia; slow growth and over harvesting hurt the industryRussias currently involved in 1/4 of the world's lumber-related product. Overharvesting tend to diminish the lumber resource faster than they could re-growth, which wil damage both the environment and Russia's economy.
The correct answer is (b.) fixed cost. Fixed cost is a cost that stays constant or a process. This is an indirect cost that does not vary with the level of good and services that are produced by a business.
