Development is best understood as select one:
a. genetically determined.
b. environmentally influenced.
c. a series of complex exchanges between nature and nurture.
d. an unsolvable puzzle.

What does the ricardian theory state? a. countries should produce all goods and services if they canb. countries should not produce goods and services that minimize opportunity costsc. countries should import goods and services if they are cheaper in other countriesd. countries should export all goods and services if they make a profit