I believe the answer is A.
The correct answer is letter C. William J. Levitt was one of the pioneers of suburban home-building. He was an American real-estate developer widely known as the father of modern American Suburbia and is one of the most influential people of the 20th century. He was the president of the company Levitt & Sons.
Answer:
It had an advanced system of writing.
Explanation:
The Harappan civilization writing system is one of the biggest mysteries. The writing of the Harappan people has been found on the seals, copper tablets, copper/bronze implements, pottery, and other miscellaneous objects. Most of the inscriptions are short, with five signs. The writings have made it difficult to sort out the writing of the early period a the language lost after its decline.