Answer:
The Elastic Clause (or the Necessary and Proper Clause)
Step-by-step explanation:
The Elastic Clause, which it's held in Article I, Section 8, Clause 18, allows Congress to make “all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers.” The foregoing powers cited here refers to the 27 enumerated powers that the Article specifically grants the government like the power to constitute tribunals inferior to the Supreme Court, establish post offices and post roads, coin money, regulate the value thereof, establish a uniform rule of naturalization, among others.
This clause allows Congress to have powers beyond those specifically listed, and therefore also allows for the passing of laws that meet the needs of a changing society.