Final answer:
The correct answer is States' rights doctrine. The doctrine of nullification refers to the belief that individual states have the right to nullify or reject a federal law that they deem unconstitutional. This idea was hotly debated in the early 19th century, particularly during the Nullification Crisis of 1832-1833.
Step-by-step explanation:
The correct answer is B. States' rights doctrine. The doctrine of nullification refers to the belief that individual states have the right to nullify or reject a federal law that they deem unconstitutional. This idea was hotly debated in the early 19th century, particularly during the Nullification Crisis of 1832-1833, when South Carolina attempted to nullify federal tariffs. The doctrine of nullification was closely tied to the concept of states' rights, which emphasized the sovereignty of states within the union.