The correct answer is (a) 2016.
The New Solid Waste Management Rules were notified by the Ministry of Environment, Forest and Climate Change on 24th September 2016. The rules came into effect from 1st October 2016.
The rules aim to improve the management of solid waste in the country. They provide for segregation of waste at source, collection, transportation, processing and disposal of waste. The rules also provide for the setting up of waste management authorities at the state and local levels.
The rules have been welcomed by environmental experts and activists. They believe that the rules will help to improve the quality of life in the country and protect the environment.
The options (b), (c) and (d) are incorrect. The New Solid Waste Management Rules were not implemented in 2019, 2018 or 1986.