‘Public health, sanitation conservancy and solid waste management’ was inserted to the Schedule of the Constitution by which of the following Constitutional Amendments?

Correct option is D

The 74th Constitutional Amendment Act, 1992 inserted the 12th Schedule into the Constitution, listing 18 functional items of municipalities. These include:
· Public health
· Sanitation
· Conservancy
· Solid waste management
This amendment gave constitutional status to municipalities and defined their powers, responsibilities, and functions.
Information Booster:
· The 73rd Amendment similarly empowered Panchayats via the 11th Schedule.
· Both aimed at strengthening local self-government (Part IX & IX-A of the Constitution).