Under the Constitution, which of the following powers belongs to the federal government?

The power to print money is indeed a responsibility of the federal government. This authority is derived from the Constitution, specifically Article I, Section 8, which grants Congress the power to "coin money" and "regulate the value thereof." This ensures a uniform currency across all states, which is essential for maintaining economic stability and facilitating trade.

The other options are powers typically reserved for state and local governments. Conducting local elections is managed at the state level, as each state has the authority to determine the procedures for elections within its jurisdiction. Regulating marriage is also a state power, as marriage laws can vary greatly between states, reflecting local customs and values. Establishing a local police force falls under the authority of local governments, as law enforcement is primarily a function of local and state jurisdictions responsible for maintaining public order.