2. Which is the best description of specialization? a. Voluntary trade
b. Having many trade relationships
c. Offering free trading
d. Focusing on a range of products that are readily available

D

Explanation:

Specialization is a method of production whereby an entity focuses on the production of a limited scope of goods to gain a greater degree of efficiency.

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.