Which sentence from the third paragraph supports the idea that "the agricultural system of the South was inherently at odds with the industrial, free labor system of the North"?

I think it was C. Depending on if you're using study island bc that's what i was working on

Explanation:

The answer had something to do with the North being against slavery or something which is why they were struggling with the South

i believe that dan is so anxious because he dose not know what awaits him when he gets there. but i dont know to be honest