I am not quite sure of the answer but I think its d. . Let me know if you've already taken the exam and what the answer is.
It is called plate techtonics
I believe the answer is: They are implied within the Constitution.
Reserved power refers to the power that guaranteed the government with a certain political authority on a specific issue.
This power is not directly stated within the constitution, but often arise as a method to exert the power that directly stated in the constitution. Example of reserved powers are: coining money, declaring war, and making treaties with other nations.
C i think is the right answer