It's related to asking a favor on bended knees. Such as asking very politely and with emotion for something you may want. Ex. Do you expect me to come to you on bended knees and ask for your forgiveness.
A - While the "radical southern states" are mentioned, it is only a part of the passage and not the main point. B- Nothing in the passage indicates that the North expected or demanded the war. The passage puts demand more on the southern states. C- The passage discusses the differences regarding slavery and the parties, and also discusses that slavery was a contributor and not necessarily the main reason for the Civil War D- Be careful! This answer states that the disputes between political parties had "little effect on the Civil War." The main theme of the passage certainly shows that much of the motivation for the Civil War was the differing perspectives of the parties. Does this help?
C. Killer bees sting in just three seconds. They sting in large numbers. They cause allergic reactions in their victims.