Answer:
The correct answer is A) People moved to cities to work in wartime industries
Step-by-step explanation:
Before World War II, the whole of Texas had a lower population than New York City. Most people lived in rural areas and only a few had high school education. Only 20% of the people owned a car with other relying on horses.
Texas was a purely rural state which was underdeveloped. However, with the US entering the War, over 1.5 million moved to Texas for training.
Industries related to war boomed in the cities and people from rural areas moved into the cities to gain work. This eventually lead to the development of large urban center which we see today in Texas.