What are the elements of circulation according to the text?
a) Commercials, markets, money, transportation, weights and measures, banks, customs, ports, etc.
b) Producers, consumers, goods, services, factors, and monetary flows.
c) Direct exchange, indirect exchange, and economic circuit.
d) None of the above.
I. The text presents a definition of circulation and its importance.
II. The text presents a simplified scheme of the economy, with its poles and flows.
III. The text presents the different types of markets.
IV. The text presents the importance of the exchange.
a) I and II are correct.
b) II and III are correct.
c) III and IV are correct.
d) All are correct.