Which is the second stage of Maslow's hierarchy of needs?

President Franklin D. Roosevelt's first action regarding the run on banks was to

(a) close all banks. (b) increase the money supply. (c) prohibit bank foreclosures. (d) provide federal guarantees to depositors.

Comparative advantage indicates that:

a. specialization and exchange will permit trading partners to maximize their joint consumption. b. a nation can gain from trade only if it is not at an absolute disadvantage in producing all goods. c. a nation can gain from trade only when its trading partners are not low-wage countries. d. countries should export products for which they are high-opportunity cost producers.