Answer:
D). Increased sectional divisions between the north and south.
Step-by-step explanation:
As per the question, one of the most significant impacts of rhetoric similar to here is the 'increased sectional divisions between the north and south' as it convinces people through using an effective and persuasive language. In the given excerpt, the language adopted by the speaker invokes the audience to believe that 'it is a great and dangerous error to suppose that all people are equally entitled to liberty.'
The claim is logically supplemented by various rhetoric tools(in the language) that convinced the people that 'liberty is a reward to be earned, not a blessing to be gratuitously lavished... people too ignorant, degraded and vicious to be capable either of appreciating or of enjoying it.' Thus, the language like this contributed to encourage the widening of the rift between the north and south. Therefore, option D is the correct answer.