Detailed Solution:

The correct answer is “All of the above”.

The Indus people practiced organized agriculture, growing crops like wheat, barley, and possibly rice. Irrigation systems and granaries also indicate surplus production.

They had well-developed industries, such as bead-making, pottery, metallurgy, and textile production. Artisans worked with materials like terracotta, faience, gold, and semi-precious stones.

Perhaps the most iconic feature — their cities were built on grid patterns, with drainage systems, public baths, and standardized brick sizes.

These are major urban centers of the civilization and have become symbolic of it. Discoveries from these sites form the core of our knowledge about the Indus Valley Civilization.