Which idea is promoted by the concept of nullification?

a. nationalism

b. states' rights

c. judicial review

d. territorial expansion?

The correct answer is B. States' rights.

Nullification is a concept that revolves around the idea that states can reject a federal law if they deem it is unconstitutional. This nullification idea has been argued several times throughout American history. This includes during the 19th and 20th centuries. However, the court system has never justified this action or deemed it legal.