To trace the development of the petroleum industry in Texas during World War II, we should consider the correct sequence of events as they logically progressed:
- Oil discoveries in the Permian Basin - This is the foundational event that started the state's significant oil industry.
- Construction of the Big Inch and Little Inch pipelines - These pipelines were crucial for transporting oil from Texas to the East Coast, especially during the war.
- German U-boats sink U.S. oil tankers off the eastern seacoast - This event highlighted the importance of oil transportation and the threats to shipping routes during the war.
- Texas oil production increases to 500,000 barrels per day - As a result of the preceding developments, oil production soared to meet wartime demand.
Therefore, the correct response that reflects this sequence is:
oil discoveries in the Permian Basin, construction of the Big Inch and Little Inch pipelines, German U-boats sink U.S. oil tankers off the eastern seacoast, Texas oil production increases to 500,000 barrels per day.