All of the following major constructions were the result of public works projects during the hoover administration except which one?
a. the empire state building
b. the hoover dam
c. the golden gate bridge
d. the world trade centers

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.