Answer:
The correct answer is option D.
Explanation:
Specialization in the economy can be defined as the situation in which an individual or nation produces a limited variety of goods in order to increase efficiency. Specialization improves the standard of living of the people.
If an economy relies on specialization each individual will produce the goods or services that he/she specializes in or has the relatively best ability to produce.
The economy produces the good or services it has the relatively best ability to produce, it relies on trade for other goods.