Identifying MCD Responsibilities: Water Supply for Schools

The Municipal Corporation of Delhi (MCD) is responsible for providing various civic services to the residents within its jurisdiction. These services are essential for the well-being and functioning of the urban environment.

Let's examine the given options to determine which one falls under the responsibility of the MCD:

1. Regular repair of the pipelines to avoid water clogging: This relates to maintaining drainage systems and infrastructure, which is typically a key function of a municipal corporation like the MCD to prevent flooding and ensure sanitation.
2. Supplying water to all schools: Providing essential services like water supply to public institutions, including schools, is a fundamental responsibility of municipal bodies or associated public utilities managed by them. While the Delhi Jal Board (DJB) specifically handles water supply in Delhi, the MCD often works in coordination or has oversight on civic amenities like water supply points, especially for public buildings. Ensuring access to basic services like water for schools falls under the broader scope of providing necessary public infrastructure and services by the municipal administration.
3. Proper arrangement of soaps and hand wash liquid: This is primarily a matter of hygiene management within specific institutions like schools, often handled by the school administration or supported by health departments, rather than a direct provision responsibility of the MCD as a general civic service across the city.
4. No child should play with dirty clogged water: This is a health advisory or public health guideline aimed at preventing disease. While the MCD works on sanitation to prevent such conditions, the statement itself is not a direct 'provision' or responsibility in the same sense as providing infrastructure or services.

Considering the core functions of a municipal corporation, the provision of essential services like water supply to public buildings such as schools is a direct responsibility or falls within the scope of services managed by the municipal authority or its related agencies.

Therefore, among the given options, supplying water to all schools is a provision that is the responsibility of the MCD or related municipal bodies.