The ornate style of temple architecture epitomized by the Hoysaleswara Temple at Halebidu:

Dravidian
Nagara
Hoysala
Vesara

The correct answer is: D) Vesara

The Vesara style of temple architecture is a fusion of the Dravidian and Nagara styles. It is characterized by its tall, slender towers, intricate carvings, and use of both granite and sandstone. The Hoysaleswara Temple at Halebidu is one of the finest examples of Vesara architecture.

The Dravidian style of temple architecture is found in southern India. It is characterized by its massive, pyramidal towers, intricate carvings, and use of granite. The Brihadeeswarar Temple at Thanjavur is one of the finest examples of Dravidian architecture.

The Nagara style of temple architecture is found in northern India. It is characterized by its tall, slender towers, intricate carvings, and use of sandstone. The Kandariya Mahadeva Temple at Khajuraho is one of the finest examples of Nagara architecture.

The Hoysala style of temple architecture is found in Karnataka, India. It is a fusion of the Dravidian and Nagara styles. It is characterized by its tall, slender towers, intricate carvings, and use of both granite and sandstone. The Hoysaleswara Temple at Halebidu is one of the finest examples of Hoysala architecture.