Final answer:
The true statement about state governments is that they are responsible for creating and operating public schools. State governments hold reserved powers to regulate various aspects of daily life within the state but cannot tax exports or make interstate agreements without Congress's consent, nor are they in charge of providing Social Security.
Step-by-step explanation:
Regarding state governments and their responsibilities, the correct statement about state governments is: a) State governments are responsible for creating and operating public schools. State governments have a wide range of reserved powers, which include the ability to regulate marriage, form local governments, conduct elections, and most importantly, control and regulate public schools. These responsibilities fall into the broader category of regulating the health, safety, moral behavior, and general welfare of their citizens.
State governments cannot place taxes on items exported from the state, as per the U.S. Constitution, which prohibits states from taxing exports. Additionally, state governments require the consent of Congress to make agreements between states, according to the Compact Clause of the U.S. Constitution. As for Social Security monies, these are provided by the federal government, not the state governments.