18. The circular-flow model shows the flow of ___.

a. money in the banking sector of the economy

b. Financial assets in the economy

C. Food and services in the product market

d. Resources and money in the economy

19. The circular-flow model shows that ___.

a. Firms are on the demand side of both the product and resource markets

b. Households are on the supply side of the resource market and the demand side of the product market.

C. Firms and governments are on the supply side of the loanable funds market

d. Governments are on the demand side of the product market and supply side of the resource market.