Nullification was a theory espoused bye john c calhoun which stated that states had the right to do what
a. get rid of unwanted national bureaucracy
b. decide which national laws states would accept
c. determine if they wanted to remain in the union
d. refuse to use the paper money issued by the federal government

Nullification proposed that the states had the right to decide which national laws states would accept.

Explanation:

With a view to dispense greater power to the states and to maintain their autonomy, John Calhoun proposed that the state governments should be allowed to choose which federal laws did they not want to implement in their states. The demands put up by the theory were never processed by any federal courts of the US as it is deemed that such a law would prove to be threat to the integrity of the nation.