Drains exiting from Mohenjo-Daro had ________ doors that were probably closed at night to prevent vagrants or negative elements from entering the city through that access.
Show answer & explanation
Correct answer: B
Explanation
The Correct Answer is option 2 i.e. Wooden .
The ancient city of Mohenjo-Daro, part of the Indus Valley Civilization (circa 2500 BCE), had a well-planned drainage system. The drains exiting the city were equipped with wooden doors, which could be closed at night. These doors likely served to prevent entry of vagrants, animals, or other unwanted elements into the city through the sewer system. This reflects the remarkable urban planning, civic management, and attention to hygiene practiced by the Indus Valley people, making Mohenjo-Daro one of the world’s earliest examples of planned urban sanitation systems.
Other options:
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Mud: Not durable enough for functional doors.
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Iron: Not commonly used in that period in the region.
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Sandstone: Used in structures, but not for drain doors.