Answer: the ability to produce a good at a lower opportunity cost than other producers
Explanation: In other to clearly understand or grasp the definition or meaning of comparative advantage, the term opportunity cost should be understood. Opportunity cost simply means the benefit which one forfeits or losses when one chooses a certain option over the other. Comparative advantage is possessed by a certain seller or economy who is capable of selling his goods at a lower opportunity cost than its competitors. Thus, the comparative advantages weighs the size or amount of benefit forfeited or lost by sellers as a result of selling at a lower price. Thus the lower the opportunity cost, the better the comparative advantage.