The correct answer is C) with protective walls.
The earliest Indus Civilizations were designed with protective walls.
We are referring to the earliest civilizations in human history. The Indus Valley was a civilization settled in what today is Pakistan and Northeast India, in the region of the Indus River. We are talking about 5,000 BCE. They began to use farming using the water of the river to grow crops. This early civilization designed their cities using protective walls to protect their people and properties from natural manifestations such as floodings.
