Correct Option
The correct option is Every house had its own bathroom paved with bricks..
Explanation
The residential architecture in the Lower Town of Mohenjodaro was characterized by a courtyard-centric layout. These structures demonstrated a high degree of urban planning, focusing specifically on privacy and sanitation.Option Analysis:
- Large windows on the ground floor walls facing the street. is Incorrect: To maintain privacy, the ground-level walls of residential buildings did not have windows facing the main streets. Light and air generally entered through the doorways or the courtyard.
- The main entrance gave a direct view of the interior courtyard. is Incorrect: The main entrance was designed to prevent a direct view of the interior courtyard from the street. Entrances were often placed in side lanes or obstructed by a wall to ensure domestic privacy.
- Every house had its own bathroom paved with bricks. is Correct: A distinctive feature of Harappan housing was the presence of a dedicated bathroom in every house. These bathrooms were paved with bricks and had drains connected through the wall to the main street drains.
- Staircases were absent in all residential structures. is Incorrect: Remnants of staircases have been found in many residential structures, indicating that houses often had a second storey or provided access to the roof.
Key Takeaway:
Harappan domestic architecture is noted for its emphasis on privacy (absence of street-facing windows on the ground floor) and advanced sanitation (individual bathrooms with drainage connectivity).