The correct answer is (d) Saharanpur.
A municipal corporation is a local government body that is responsible for the administration of a city or town. It is elected by the people of the city or town and is responsible for providing services such as water, sanitation, roads, and public transportation.
Aligarh, Faizabad, and Moradabad all have municipal corporations. Saharanpur does not have a municipal corporation. It is governed by a municipal board, which is a smaller and less powerful body than a municipal corporation.
Municipal corporations are important because they provide essential services to the people of cities and towns. They also play a role in planning and development, and in promoting economic growth.