The administrative headquarters of Karnataka:

Bengaluru
Vidhana Soudha
Mysuru
Hubli-Dharwad

The correct answer is A) Bengaluru.

Bengaluru is the capital of the Indian state of Karnataka. It is the third-most populous city in India after Mumbai and Delhi, and the 12th-most populous city in the world. Bengaluru is known as the “Garden City” for its many parks and gardens. It is also a major technology hub, and is home to many multinational corporations such as Infosys, Wipro, and Tata Consultancy Services.

Vidhana Soudha is the seat of the Karnataka state government. It is located in Bengaluru. Vidhana Soudha is one of the largest administrative buildings in India. It was built in the Indo-Saracenic style of architecture.

Mysuru is a city in the Indian state of Karnataka. It was the capital of the Kingdom of Mysore from 1399 to 1947. Mysuru is known for its palaces, temples, and gardens. It is also a major tourist destination.

Hubli-Dharwad is a twin city in the Indian state of Karnataka. It is the third-largest city in the state after Bengaluru and Mysuru. Hubli-Dharwad is a major commercial and industrial center. It is also home to a number of educational institutions.