Answer: I think it might be b
D, the postal service should operate on Sunday
The correct answer is letter B. In Federalism, there are things that only the federal government can do, and other that only the states can do. But there are also some things that both federal government and states are able to do, and among them there's the power to build roads. Other examples of shared duties is<em> creating and collecting taxes, borrowing money, making and enforcing laws, etc. </em>
Answer:
Space
Explanation: It is a physical gap between 2 objects so it is space.