Just took the test and passed, answer is B. Americans were ready for a change in leadership on edgunity.
The concept of nullification is a "legal theory that a state has the right to nullify, or invalidate, any federal law which that state has deemed unconstitutional with respect to the United States Constitution (as opposed to the state's own constitution)."
C) While European immigrants tended to migrate to the East Coast of the U.S., Asian immigrants tended to migrate to the West Coast of the United States is the statement which is true. This happened purely for geographical purposes, Asia was closest to the West Coast, with many Chinese immigrants settling in California, and Europe was closes to the East Coast, with many Germans and Irish people settling in New York and Boston, respectively.