Shell Oil recently exchanged one million pest-control devices for sugar from a Caribbean country. This practice is referred to as:

Shell Oil recently exchanged one million pest-control devices for sugar from a Caribbean country. This practice is referred to as:

Shell Oil recently exchanged one million pest-control devices for sugar from a Caribbean country. This practice is referred to as:



A.

commission.


B.

price.


C.

barter.


D.

tariff.



Answer: C


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