The Indus Valley people did not make use of:

Answer & Explanation

Answer: [D]

The Indus Valley people did not make extensive use of D Iron and Tin. While the Indus Valley Civilization was known for its advanced urban planning, trade networks, and sophisticated craftsmanship, there is limited evidence of widespread use of iron and tin during this period. The primary metals used by the Indus Valley people were copper and its alloys, such as bronze. Copper objects and bronze tools have been found in archaeological excavations of the civilization's sites. However, the widespread use of iron and tin, which became prominent in later civilizations, such as the Vedic period in India, was not a significant feature of the Indus Valley Civilization.