Which of these is a power that is the responsibility of ONLY the national government? A foreign policy B taxation of citizens C promoting public health D providing for public safety

The correct answer is:<br /><br />**A. foreign policy**<br /><br />### Explanation:<br />Foreign policy is the responsibility of only the national government because it involves managing relationships with other countries, negotiating treaties, and representing the nation on an international level. These powers are explicitly granted to the federal government in the U.S. Constitution.<br /><br />Other options:<br />- **B. Taxation of citizens**: Both the national and state governments have the power to tax (concurrent power).<br />- **C. Promoting public health**: This is primarily a state and local government responsibility, though the federal government may assist.<br />- **D. Providing for public safety**: This is also primarily a state and local government responsibility.