Answer:
above the seller's opportunity cost and below the buyer's opportunity cost.
Explanation:
Terms of trade is the ratio a country's export prices to its import prices.
Terms of trade = (export / import) x 100
export would comprise of goods and services produced in the US that are been sold to foreign countries
Import would comprise of foreign produced goods and services that are been sold in the US
Terms of trade that exceeds 100 is a positive economic indicator
Opportunity cost of the next best option forgone when one alternative is chosen over other alternatives
For a trade to be beneficial to the seller, it should exceed the opportunity cost of the seller
For it to be beneficial to the buyer, it should be below the opportunity cost of the buyer
It is under these circumstances that a profit is guaranteed
