The Declaration of Independence was created on July 4, 1776. It served as the statement of the second continental congress that they regarded themselves as 13 independent sovereign states that were no longer under British rule. One of the things covered in The Declaration of Independence is the issue of how the government should obtain power.
The Declaration of Independence states that the government should obtain power from the consent of the people that are being governed. This gave clear indication from the beginning that the United States government was meant to give the people being governed a share in the power.
Declaring a law unconstitutional is a check TO the legislative branch from which it was passed, FROM the Judicial Branch, which carries the power of judicial review. If that is the case, then C is correct.
The legislative can't impeach the Legislative only the executive branch and the judicial branch.