Final answer:
The feature of the pre-Civil War South reflected in the graph is the importance of slavery to the economy, with its agricultural dependence on crops like cotton, and resistance to high tariffs.
Step-by-step explanation:
The feature of the pre-Civil War South that is reflected in the graph is likely A the importance of slavery to the economy. During this time, the Southern economy was highly dependent on agriculture, with crops like cotton and tobacco being central to its economic success. The South's dependence on cotton was matched by its dependence on slaves to harvest the cotton, which formed the very foundation of the country's economic prevalence.
Additionally, the graph may reflect the South's resistance to high tariffs because they feared that it represented an unwelcome expansion of federal power and would raise the prices of goods they needed to import. Moreover, the insistence on low tariffs by the South shows their desire to maintain the economic status quo that benefited from slavery.