The correct answer is: Both I and II follow.
The statement says that there has been a significant drop in the water level of all the lakes supplying water to the city. This means that there is less water available for the city’s residents. If the water supply authority does not take any action, the city may run out of water. To prevent this, the water supply authority should impose a partial cut in supply to tackle the situation. This will ensure that everyone in the city has access to some water, even if it is less than they are used to.
In addition to imposing a partial cut in supply, the government should also appeal to all the residents through mass media for minimal use of water. This will help to reduce the amount of water that is used by the city’s residents, which will help to conserve the city’s water supply.
Therefore, both I and II follow.