Answer:
c. is equal to 1.
Explanation:
Opportunity cost is the cost of the next best option forgone when one alternative is chosen over other alternatives.
Let's assume that the farmer can produce:
1. 10 bushels of corn or 10 bushels of cotton, the opportunity cost of both activities is 1. = 1×1 = 1
2. 10 bushels of corn or 20 bushels of cotton. The opportunity cost of producing one bushel of corn is 2 while the opportunity cost of producing one bushel of cotton is 0.5. 2×0.5 =1
In both examples, the multiplication of both opportunity costs equals one.
I hope my answer helps you