Which clause of the Constitution allows it to be amended?

The Amendment Clause, found in Article V of the U.S. Constitution, explicitly outlines the process for amending the Constitution. This clause provides two methods for proposing amendments: either by a two-thirds majority vote in both the House of Representatives and the Senate or by a constitutional convention called for by two-thirds of the state legislatures. Additionally, it describes the ratification process, requiring that three-fourths of the state legislatures or conventions approve the proposed amendment for it to become part of the Constitution.

This flexibility in the amendment process is essential, as it allows the Constitution to adapt to changing societal values and needs over time, which is a fundamental feature of a living document intended to govern a dynamic society. The other options mentioned do not pertain to amending the Constitution, but rather focus on different aspects of federal authority and law.