This question asks which Supreme Court decision specifically held that water is a basic need for survival and forms part of the right to life and human rights under Article 21 of the Constitution. Each option can be tested against what the cited case actually decided.
Only the fourth case ties water directly to Article 21 as a survival-based human right; the other three decisions address bonded labour, displacement/rehabilitation, and environmental regulation respectively, which are related but distinct issues.
Therefore, the correct answer is M.C. Mehta v. Union of India (2004) 12 SCC 118.
The question asks which court was the first to judicially develop the right to a healthy environment as a component of the fundamental right to life, so each option needs to be checked for chronological priority.
Among these, only the Philippine Supreme Court is credited with the earliest judicial recognition of this link, which later courts, including in India, drew upon.
Therefore, the correct answer is Philippine Supreme Court.
The question tests the classification of rights into generations, and each option needs to be checked against what that generation actually covers.
Because environmental rights are collective and shared rather than individual, they fall squarely within the third category rather than the first, second, or the loosely defined fourth.
Therefore, the correct answer is Third generation rights.
This is a factual date question about the first UN Water Conference, and the four years given can be checked against the actual historical record.
Only 1977 matches the historical record of the Mar del Plata conference, with the other years either preceding it or following its conclusion.
Therefore, the correct answer is 1977.
This question turns on the precise wording used in the Mar del Plata resolution regarding access to drinking water, so each option should be measured against that actual text.
The resolution's actual formulation ties entitlement to basic survival needs, which rules out the age-based, naturalistic, and climate-based alternatives.
Therefore, the correct answer is In quantum equal to their basic needs.
The question asks how the right to access drinking water is legally classified in Indian constitutional law, so each label needs to be tested against how courts have actually treated this right.
Because the entitlement is derived from Article 21 itself rather than from ordinary legislation, a collective label, or discretionary grant, its correct constitutional character is that of a Fundamental Right.
Therefore, the correct answer is Fundamental Right.