Final answer:
The Dust Bowl caused a decline in population as people left to find work elsewhere in the Southern Plains states.
Step-by-step explanation:
The correct answer is A. The Dust Bowl greatly affected the communities of the Southern Plains states, leading to a decline in population as millions of people were forced to leave in search of job opportunities. The severe drought, combined with poor farming practices, resulted in the destruction of crops and the loss of livelihood for many individuals. As a result, families and individuals migrated to other areas in search of work and economic stability.
Learn more about The impact of the Dust Bowl on the communities of the Southern Plains states