Final answer:
A developing country holding the sole source of a metal has a comparative advantage, enabling it to produce at a lower opportunity cost than others, promoting trade and mutual benefits.
Explanation:
In this scenario, the developing country holding the sole source of a particular metal has a comparative advantage. Comparative advantage refers to the ability to produce a good or service at a lower opportunity cost than other countries. It is vital in determining international trade patterns and can lead to mutual benefits through specialization and trade.
Learn more about Comparative Advantage in Economics here:
https://brainly.com/question/34188675
