Correct option is A
Here’s a deeper analysis of why Eden Gardens is the odd one out:
Eden Gardens, Kolkata → A cricket stadium, not a garden.
Lodhi Gardens, Delhi → A historical garden with tombs and greenery.
Hanging Gardens, Mumbai → A terraced garden known for its scenic views.
Brindavan Gardens, Mysore → A famous landscaped garden with fountains.
Other reason:
The other three are actual gardens, while Eden Gardens is a sports venue.
It lacks the primary function of being a public green space meant for relaxation, unlike the others.
Thus, the correct option is (a).