The correct answer is letter D
Considered one of the leading economists of the 20th century, Joseph Schumpeter was one of the first to believe that technological innovations can be an engine of capitalist development.
Schumpeter's work was marked, among others, by the economic cycle theory. According to him, for the economy to come out of a state of equilibrium and start to skyrocket, the emergence of some innovation from an economic point of view is necessary, which considerably changes the previous conditions of equilibrium .
Innovation from an economic point of view means: the introduction of a new good on the market, the discovery of a new production method or the sale of goods, among others.