The Directive Principles of State Policy in Part IV of the Constitution contain several distinct duties addressed to the State, and only one of them is specifically about the environment. Checking what each named article actually covers narrows down the answer.
Because Article 48A is the only one of the listed provisions that expressly directs the State to protect and improve the environment and safeguard forests and wildlife, it alone answers the question.
Hence, the correct answer is Article 48A.
Noise as a form of pollution has statutory roots in more than one enactment, and the Noise Pollution (Regulation and Control) Rules trace their authority to that combined framework. Looking at what each Act contributes clarifies why more than one of them is involved.
Because the regulation of noise draws on the Air Act's recognition of noise as a pollutant as well as the Environment Protection Act's rule-making machinery, the framework rests on both enactments together.
Hence, the correct answer is Both (A) and (B).
Several waste-management rules deal with specific categories of waste, but only one of them is built around a schedule of industrial processes that generate hazardous waste. Comparing what each rule actually regulates identifies the right one.
Only the Hazardous Wastes (Management and Transboundary Movement) Rules, 2016 are structured around a schedule of processes that generate hazardous waste, which the other two rules do not attempt to do.
Hence, the correct answer is Hazardous Wastes (Management and Transboundary Movement) Rules, 2016.
Extended Producer Responsibility fixes continuing responsibility on a producer for the post-consumer stage of a product's life, including its collection and environmentally sound disposal. Testing each doctrine against that idea shows which one it actually reflects.
Because Extended Producer Responsibility is essentially about making the producer bear the cost of managing the pollution its product eventually causes, it is grounded in the Polluter Pays Principle rather than in liability doctrines meant for accidents or vicarious wrongs.
Hence, the correct answer is Polluter Pays Principle.
The Environment (Protection) Act, 1986 was enacted by Parliament and received the President's assent before being formally brought into force by a separate notification, and the date to identify is that commencement date rather than the date of assent.
Since the Act's actual commencement date, as fixed by the Central Government's notification, is 19th November 1986 rather than any of the earlier dates listed, that is the one supported by the Act's legislative history.
Hence, the correct answer is 19th November 1986.
Article 48A was added to the Directive Principles of State Policy as part of a well-documented set of constitutional changes made in the mid-1970s, and matching it to the right amending Act means looking at what each of the listed amendments actually did.
Since only the Forty Second Amendment Act, 1976 touches the Directive Principles by adding Article 48A alongside the Fundamental Duties, none of the other listed amendments, including the similarly numbered and dated Fortieth Amendment, are responsible for it.
Hence, the correct answer is Constitution (Forty Second Amendment) Act, 1976.