What are ways that today’s farmers can avoid making the same mistakes as the farmers in the 1930’s?

By planting different crops in the same piece of land every year to make the soil more fertile and by raising the price of crops so that the farmers won't get angry and leave their farms and give up farming like many did during the Great Depression (the 1930's). If the farmers don't do that, then most likely many farmers will have not very nutritious soil and will leave their farms and give up farming, and, as a result, the whole entire country will starve without the farmers.

Explanation:

the answer is b.

hope this !

b, the anti immigrant fervor