Answer:
China lost access to trade and technology from other parts of the world.
Step-by-step explanation:
During the Ming Dynasty, China entered a period called isolation.
Isolationism is a foreign policy of restricting contacts with other countries. During Ming Dynasty, China went into isolation period in the 15th century. Emperors of Ming Dynasty believed that if they would limit their contacts and stop trading with other countries.
Though this isolation helped Chinese to build a good infrastructure but it affected the development of Chinese technology because they lost access to trade and technology from other countries. While China was in isolation, European power were becoming advance in technology, which became the ultimate reason of ending of Chinese isolationism.
Thus the correct answer is the third option.