Which of the Following Statements Represents an Informal Method Used

Which of the following statements represents an informal method used to adapt the Constitution?

A) Congress suspends civil liberties during time of war.
B) The Supreme Court creates a specialized court to review requests for wiretapping for suspected terrorists.
C) The Supreme Court makes recess appointments to lower federal courts when the president delays confirmation of appointees.
D) The president delegates to a federal agency the power to write regulations.
E) Congress passes a law that regulates business conducted between different states because of the commerce clause.