The correct answer is: A) Chitradurga
The National Kamdhenu Breeding Centre is located in Chitradurga district of Karnataka. It is a government-run breeding centre for indigenous cows. The centre was established in 1987 with the objective of conserving and improving the genetic quality of indigenous cows. The centre has a herd of over 1,000 cows of different breeds, including Gir, Sahiwal, Tharparkar, and Kankrej. The centre also has a research laboratory and a training centre.
The National Kamdhenu Breeding Centre is a major source of quality semen and embryos of indigenous cows. The centre also provides training to farmers on the management of indigenous cows. The centre has played a significant role in the conservation and improvement of the genetic quality of indigenous cows in India.
The other options are incorrect because:
- Option B, Tumkur, is a district in Karnataka. However, the National Kamdhenu Breeding Centre is not located in Tumkur.
- Option C, Shimoga, is a district in Karnataka. However, the National Kamdhenu Breeding Centre is not located in Shimoga.
- Option D, Hassan, is a district in Karnataka. However, the National Kamdhenu Breeding Centre is not located in Hassan.