Answer:
The correct answer is B. One result of the Supremacy Clause is that the Supreme Court can declare a state law unconstitutional.
Step-by-step explanation:
The Second Clause of Article VI of the US Constitution, more commonly referred to as the Supremacy Clause, states that the US Constitution, as well as the laws and treaties adopted by the federal government, constitute "the supreme law of the nation. This means that the States of the United States are not sovereign and, as a last resort, it is always the authority of the Union that overrides the constitution and laws of each State of the Union.