Correct Option
The correct option is The superstructure over the garbhagriha.
Explanation
Dravidian temple architecture, which flourished in South India, is characterized by distinct structural components that differentiate it from the Nagara style of North India. The primary elements include the Vimana, Gopuram, and Mandapa.
Detailed Analysis
- The superstructure over the garbhagriha is Correct: In the Dravidian style, the Vimana refers to the superstructure or tower that rises directly above the garbhagriha (sanctum sanctorum). Unlike the curvilinear Shikhara of the Nagara style, the Dravidian Vimana is typically pyramidal in shape and rises in stepped stories.
- The gateway of the temple is Incorrect: The monumental entrance gateway in Dravidian temples is known as the Gopuram. In later Dravidian architecture (e.g., Vijayanagara and Nayaka periods), the Gopurams often became larger and more ornate than the Vimana itself.
- The assembly hall is Incorrect: The assembly hall or pillared pavilion used for public rituals and gatherings is called the Mandapa.
- The water tank is Incorrect: While water tanks (often called Kalyani or Pushkarini) are integral to temple complexes in South India, they are distinct functional features and not referred to as Vimana.
Key Takeaway: The Vimana is the pyramidal tower over the main shrine in Dravidian architecture, whereas the Gopuram is the entrance gateway located on the boundary walls.