Concept:
Eco-Sensitive Zones (ESZs) are environmentally fragile areas surrounding protected forests, wildlife sanctuaries, and national parks.
These zones are created to:
• Protect biodiversity,
• Reduce environmental degradation,
• Regulate human activities near protected areas,
• Maintain ecological balance.
They act as transition zones between protected ecosystems and human settlements.
Step 1: Understand the legal basis of Eco-Sensitive Zones.
Eco-Sensitive Zones in India are associated with wildlife and protected area conservation measures under environmental and wildlife protection frameworks.
The relevant legislation connected with such protection is:
\[
\text{Wild Life Protection Act, 1972}
\]
Step 2: Analyze the given options.
• Environment Protection Act 1968 -- Incorrect year and not the appropriate legislation here.
• Wild Life Protection Act 1972 -- Correct legislation associated with protection of ecologically sensitive areas around wildlife habitats. \checkmark
• Cantonment Act 2006 -- Related to military cantonment administration.
• Forest Conservation Act 1980 -- Concerned mainly with forest land diversion and conservation, not specifically ESZ declaration.
Therefore, the correct answer is:
\[
{\text{Wild Life Protection Act 1972}}
\]