Answer: The question you asked is not easy to answer, as there are many factors that influence the effects of turning forest land into farmland. However, based on the information I found from the web, I can suggest two possible positive effects:
More potential for food production: One of the main reasons why people convert forests into farmland is to increase the amount of food they can grow and harvest. This can help meet the growing demand for food in the world, especially in regions where food insecurity is high. For example, according to a study by National Geographic Society, Africa has about 60 percent of the world’s uncultivated arable land, which could be used to produce more food for its population and export markets. However, this also depends on the availability of water, soil quality, and other factors that affect crop yields.
Farmland can be left empty and not have to be used for the same crop over and over: Another possible benefit of converting forest land into farmland is that it can allow farmers to practice crop rotation, which is a method of changing the type of crop grown on a piece of land every season or year. This can help prevent soil erosion, pest infestation, and nutrient depletion, as well as increase soil fertility and crop diversity. For example, according to a report by Raydient Places, farmers in Alabama use crop rotation to grow corn, soybeans, wheat, and cotton on their cleared land.
Therefore, based on these two points, the correct answer to your question is b. More potential for food production. However, I also want to remind you that turning forest land into farmland can have many negative effects as well, such as loss of biodiversity, water shortages, greenhouse gas emissions, and social conflicts.