Which of the following was a key principle of judicial review established by Marbury v. Madison?

A. Laws passed by Congress must be carried out.
B. The judicial branch can declare laws unconstitutional.
C. State law must be followed when there is a conflict with any other law.
D. The Supreme Court has jurisdiction only in matters of federal law, not state law.

Legal Branch. The legal branch translates the significance of laws, applies laws to singular cases, and chooses if laws damage the Constitution. It's included the Supreme Court and other government courts. Incomparable Court, The Supreme Court is the most astounding court in the United States. The legal branch incorporates criminal and common courts and deciphers the United States Constitution. As we took in, the most essential piece of the legal branch is the Supreme Court. The Supreme Court's job is to decipher the Constitution and breaking point the forces of alternate parts of government