Answer:
The answer is C. Declaring a state law unconstitutional.
Step-by-step explanation:
This is the power held by the Supreme Court, as it is their duty to check the other branches of government, including state governments. The primary objective of the Supreme Court is to uphold the constitution so this is the most logical answer.
And incase there is any confusion on why it isn't A is because the HOuse of Representative in charge of impeachment.
I hope this helps :)