The correct answer is:
Creating a national bank
Explanation:
The Necessary and Proper Clause in Article I of the Constitution grants the power to create all laws necessary for the proper function of the Government of the United States. This laws are also known as implied powers because they refer to the powers that are not literary stated in the Constitution, but they are granted for the correct functionality of the government.
The creation of a National Bank, in order to manage the debt and currency of the country is an example of an implied power because although it is not specifically stated in the Constitution, it is part of powers the government can create to function correctly.