The correct option is 2. Many people moved from farms to cities and towns.
During the economic growth of the 20th century, Texas experienced significant changes that impacted its population and economy. One of the major effects was the migration of many people from rural areas, including farms, to urban centers such as cities and towns. This shift from agricultural to urban areas was a result of industrialization, increased job opportunities in non-agricultural sectors, and advancements in technology.
Option 1 is incorrect. While there may have been instances of land development being reclaimed by nature, it is not a direct consequence of the economic growth of the 20th century in Texas.
Option 3 is also incorrect. While there might have been some individuals who left Texas to live elsewhere in the country for various reasons, it is not a direct result of the economic growth of the 20th century in Texas.
Option 4 is incorrect as well. The economic growth of the 20th century in Texas did not lead to many people becoming farmers. In fact, the trend was the opposite, with people leaving farming occupations and transitioning to other sectors of the economy due to industrialization and urbanization.