Answer:
hii there
The correct answer is option ( D ) Khmer empire
Angkor Wat is located roughly five miles north of the modern Cambodian city of Siem Reap, which has a population of more than 200,000 people. However, when it was built, it served as the capital of the Khmer empire, which ruled the region at the time.
Angkor Wat is an architectural masterpiece and the largest religious monument in the world – covering an area four times the size of Vatican City. It was built by the Khmer King Suryavarman II in the first half of the 12th century, around the year 1110-1150, making Angkor Wat almost 900 years old.
hope it helps
have a nice day