The correct answer is C) siege weapons.
The earliest Indus Valley civilizations utilized all of the following except siege weapons.
The Indus Valley civilization settled in the region of what today is Northwest India and Pakistan, next to the Indus River. It was one of the ancient civilizations that learned how to grow crops during the Agriculture of Neolithic Revolution and settled on the banks of rivers. They used domesticated animals and irrigation for the crops.
Other ancient civilizations also settled in next to rivers. That was the case of the Sumerians that settled between the Tigris and Euphrates Rivers, or the Egyptians that established nex to the Nile River.
