Answer: b. Marbury v. Madison
Explanation:
In Marbury v. Madison, the Supreme Court in an opinion written by Chief Justice John Marshall, declared an act of Congress unconstitutional. This was a first and from that day forth (February 24, 1803) the doctrine of Judicial Review was established. It is interesting to note that Thomas Jefferson declared that the concept of Judicial Review was unconstitutional but the decision remains unchallenged.
