The existence of pure barter does not necessarily indicate a very primitive form of civilization. Often he system of exchanging property survives long after the community has progressed considerably in other respects. This may be due to conservatism, since primitive peoples are reluctant to change their trading methods, even though they be sufficiently intelligent and advanced to adopt more convenient methods.

In some cases thedre is prejudice against the adoption of a monetary econoby, though such prejudice is usually directed against the use of conis rather than against primitive mondy. In many cases barter coutinues to be the pricipal method of trading long after the adoption of exchange of goods for money, for the simple reason that there is not enough money to go round. And a decline in barter. Distrust in money has also been responsible for reversion to the barter system such distrust may have been caused by debasoment or inflation
윗글의 요지로 가장 적절한 것은?

1. Monetary economy is more convenient than barter.

2. Barter system is a lasting method of exchange.

2. Primitive peoples are unsilling to use money.

4. Economic depression is caused by conservatism

5. Distrust in money is a kind of prejudice
설명도 부탁~~~