The correct answer is "C".
The Indus Valley Civilization was an ancient civilization located in the Indian Subcontinent. The Territory where the countries of Pakistan and the Northwest of India are located. The population lived in the fertile terrain which was located next to the Indus River.
It neighbored Mesopotamia, which, along with Egypt and the Indus Valley, were the main three civilizations which coexisted in northern Africa, West Asia, and South Asia. Agriculture was the main economic activity and the goods that were produced here were traded with merchants from Mesopotamia.