Question 4 (5 points) Read the source and answer the question.

The Forbidden City in Beijing, with its landscaped gardens and many buildings (whose nearly 10,000 rooms contain furniture and works of art), constitutes [establishes] a priceless testimony to Chinese civilization. . . . The Imperial Palace of the Ming and Qing Dynasties in Beijing known as the Forbidden City was constructed between 1406 and 1420 by the Ming emperor Zhu Di and witnessed the enthronement [crowning] of 14 Ming and 10 Qing emperors over the following 505 years.

— United Nations Educational, Scientific, and Cultural Organization

Which statement analyzes the significance of the structure described in this source?

a
The Forbidden City used new architectural styles.
b
The Forbidden City was where democracy was established.
c
The Forbidden City protected the country from invasion.
d
The Forbidden City was the center of government.