To answer the question about which factors influenced the trend shown in Source 3, we should consider relevant historical context regarding Louisiana during World War II.
The correct answers are likely:
B. growth of jobs in war production - The war effort created numerous jobs in factories and shipyards, drawing people to Louisiana for employment.
E. expansion of the shipbuilding industry - Louisiana's shipbuilding industry expanded significantly during this period due to the military's demand for ships and naval support, further contributing to job creation and economic growth.
The other options, while potentially relevant, do not directly correlate with the economic and workforce trends typically observed in Louisiana during World War II.