Final answer:
Non-U.S. citizens are generally restricted from accessing classified information, which makes the answer to the question 'True'. Voting rates in the U.S. are not higher than in Sweden and South Korea, so that statement is 'False'. The necessary and proper clause tends to expand rather than limit the power of the national government, so the answer is 'False'.
Step-by-step explanation:
When considering access to classified information, under normal circumstances, non-U.S. citizens are indeed restricted from gaining access. Therefore, the answer is a. True. Classified information is a category of data or material that has been deemed sensitive for reasons of national security, and access to it is typically restricted to individuals who have been vetted through a clearance process and have a demonstrated need to know.
In the context of the United States, voting rates are lower than in many other democratic industrialized countries such as Sweden and South Korea, making the correct answer here b. False. Lastly, as for the notion of the necessary and proper clause, it has traditionally been interpreted to expand, rather than limit, the powers of the national government, thus the answer is b. False.