Answer:
B. Planned city construction
Explanation:
Mohenjo-Daro and Harappa are the important cities discovered in the Indus Valley Civilization. Indus Valley civilization is one of the oldest and most famous civilization in the world. They flourished along the river Indus, hence the name of the civilization.
This civilization was quite advance. They constructed their houses with bricks, they have street lights, they have a well planned cities, big roads and proper drainage system. The people of the Indus Valley civilization did agriculture and they build store houses for the grains. Their cities are very well planned with wide roads and proper drainage system. They also have great baths in their cities.