FTCE Pre-K Prekindergarten PK-3 Practice Exam 2025 - Free FTCE PK-3 Practice Questions and Study Guide

The correct answer is indeed related to regulating intrastate trade, which is a power reserved for the states. The Tenth Amendment to the United States Constitution delineates that powers not delegated to the federal government, nor prohibited to the states, are reserved for the states or the people. This includes the authority to manage trade that occurs entirely within a state's borders, ensuring that states can regulate their own economies, businesses, and commerce without federal interference.

The other options pertain to powers that are explicitly granted to the federal government. Declaring war is a responsibility assigned to Congress, allowing for a unified national defense policy. Issuing currency is a power held solely by the federal government, managed by the Treasury and the Federal Reserve. Conducting foreign affairs is another federal power, as it is essential for maintaining international relations, treaties, and diplomacy. This division of power is fundamental to the federal structure established by the Constitution, reinforcing the balance between state and federal authority.