Pretend that you are a farmer. Your land is suffering from soil erosion, and you need to decide how to protect your topsoil from further erosion. Which strategy would be most helpful in solving your problem?

Explanation:

Soil erosion can be prevented in various ways. If my land was suffering from soil erosion, the best remedies that I would undertake to protect my topsoil from further erosion are as follows:

This two remedies are the most environmental friendly as well as cheap and affordable for protection of soil erosion.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.