Final answer:
The correct answer is B. Indus River Valley, where the Indus Valley Civilization, known for advanced urban planning and water management, first emerged and flourished.
Step-by-step explanation:
People began to settle in India in a place called the Indus River Valley. The Indus Valley Civilization emerged around 2800 BCE and was notable for its advanced urban planning, including sophisticated systems of water management in their cities such as Harappa and Mohenjo-Daro.
Although it eventually declined by 1700 BCE, this civilization laid down the cultural and agricultural foundations for future South Asian societies.