Wastage of polythene bags becomes a cause to:

The correct answer is Choke the drain. Polythene bags are non-biodegradable materials that do not decompose naturally. When discarded improperly, they accumulate in drainage systems, blocking the flow of water. This blockage, commonly referred to as choking the drain, leads to severe issues such as waterlogging, flooding, and unsanitary conditions, especially during rainfall.

• Protect the drain is incorrect because polythene bags cause harm, not protection.
• Remove the drain is false; they block, rather than remove, the drainage infrastructure.
• Clean the drain is also incorrect as they introduce waste and obstruct cleanliness.