I'm thinking indirect characterization.
The character is voicing his thoughts upon himself and reveals possible actions done.
I believe the answer is A.Slaves from the northern states crossed over to the South in search of work to stay alive. if wrong plz let me know this is the best i could do.
The correct answer that would best complete the given statement above would be the term SATIRE. In "They,” Sassoon uses the literary technique of SATIRE, which attempts to mock others with irony. This is a literary technique used by writers to criticize f<span>oolishness and corruption of an individual or a society by using humor, irony, exaggeration or ridicule. Hope this answer helps.</span>