The idea that states could cancel any federal legislation they deem unconstitutional is known as the Nullification Theory. Thus the correct answer is B.
What is federal legislation?
When any bill is approved by both the houses of congress and signed by the president to allow it to convert into law will be considered federal law which is implemented all over the country.
The Constitutional theory that disapproves judiciary decisions by individual states consider unconstitutional and seems conflicting after the rise in the early history of America.
According to this theory or philosophy, states have the authority to nullify any law that seems as unconstitutional and the decision is not liable to challenge by any federal entity.
Therefore, option B is the appropriate answer.
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