I assume that these are the options.
the first option, tariff, is a form of tax.
the second option, work ethic, is indeed something the workers can do to improve the economy so this is the correct answer
Osaka is a city and trade surplus would be more an effect than it cause for good economy
Harvard College was originally founded by Puritan theologists to train ministers.
D) en el dormitorio
Dormitorio means dorms, so a bedroom, the question donde duermes means where do you sleep? I sleep in the dorms, therefore D is the correct answer.
Answer: State that government receives its power from the people