The group of temples famous for their fusion of architectural styles, a UNESCO World Heritage Site:

Badami
Pattadakal
Belur
Halebidu

The correct answer is: B) Pattadakal

Pattadakal is a UNESCO World Heritage Site located in the Bagalkot district of Karnataka, India. It is a group of Hindu and Jain temples built between the 7th and 8th centuries CE. The temples are famous for their fusion of architectural styles, which include Chalukyan, Rashtrakuta, and Hoysala styles.

The temples at Pattadakal are built on a raised platform and are surrounded by a wall. The main entrance to the temple complex is through a large gateway. The temples are made of sandstone and are decorated with intricate carvings. The most famous temple at Pattadakal is the Virupaksha Temple, which is dedicated to the Hindu god Shiva. The temple is a fine example of Chalukyan architecture and is one of the most important temples in Karnataka.

The other options are incorrect because:

  • Badami is a group of Hindu and Jain temples located in the Bagalkot district of Karnataka, India. The temples were built between the 6th and 7th centuries CE by the Chalukya dynasty. The temples are famous for their rock-cut architecture.
  • Belur is a town in the Hassan district of Karnataka, India. It is home to the Chennakeshava Temple, which is a UNESCO World Heritage Site. The temple was built in the 12th century CE by the Hoysala dynasty.
  • Halebidu is a town in the Hassan district of Karnataka, India. It is home to the Hoysaleswara Temple, which is a UNESCO World Heritage Site. The temple was built in the 12th century CE by the Hoysala dynasty.