Why did northerners headed to kansas after the passage of the kansas-nebraska act?

In a group discussion, which of these is the best example of synthesis claims into a single conclusion?

Review of module 5 history dba history

The impeachment of president clinton by the u.s. house of representatives occurred with a. virtually all republicans supporting it, while virtually all democrats opposed it b. about two-thirds of republicans supporting it and about two-thirds of democrats opposing it c. half of all democrats and half of all republicans supporting it, while half of all democrats and half of all republicans opposed it d. virtually all democrats supporting it, while virtually all republicans opposed it