Answer:
Option (b) is correct.
Explanation:
According to the law of comparative advantage, a person or a country has a comparative advantage in producing a commodity if the opportunity cost of producing that good as compared to the other commodity is lower than the other country.
For example:
There are two countries; Country A and Country B. There are two goods to be produced; Computer and bottles.
Suppose the opportunity cost of producing a computer in Country A is 4 bottles and the opportunity cost of producing a computer in Country B is 6 bottles.
Therefore, the Country A has a comparative advantage in producing computers because of the lower opportunity cost of producing it.