Final answer:
The prices of oil and cotton falling showcases the impact of the Great Depression on Oklahoma's economy, leading to extensive financial hardships and contributing factors like the Dust Bowl that caused significant migration out of the state.
Step-by-step explanation:
The correct answer that best shows the impact of the Great Depression on Oklahoma is B. The prices of oil and cotton fell, which harmed the economy of Oklahoma. During the Great Depression, Oklahoma, like many other states, faced economic hardship. The state had a dual dependence on both oil and agriculture, particularly cotton. However, with the onset of the Depression, demand and prices for these commodities plummeted, leading to widespread economic distress. Alongside the falling prices, Oklahoma's agricultural sector was further devastated by the environmental disaster known as the Dust Bowl, resulting in overworked land and subsequent massive dust storms. This led to drastic declines in crop productivity, which compounded the economic struggles of the state.
Moreover, the Dust Bowl exacerbated rural economic woes and led to significant outmigration, with many Oklahomans leaving the state to seek work elsewhere, often in California. Yet, they found harsh realities elsewhere as well, facing discrimination and difficult living conditions while searching for scarce employment opportunities in their new locations.