The correct answer is A. Guatemala sold its land to a foreign company to develop.
Post-World War II, Guatemala had significant interactions with foreign companies, notably the United Fruit Company, which exerted considerable influence over its agricultural production and land use. This relationship often led to issues of land ownership and exploitation.
In contrast, Mexico underwent significant land reform and nationalization of industries, including oil, which helped to shape its economic policies differently from Guatemala's. Thus, while both countries faced their own unique challenges and paths in their economic development, Guatemala's experience with foreign land ownership is a notable differentiator.