The correct answer is: a) Improve livestock breeds.
The Central Herd Registration Scheme (CHRS) is a scheme implemented by the Government of India to improve the quality of livestock in the country. The scheme aims to improve the genetic quality of livestock by registering and tracking animals, providing artificial insemination services, and promoting the use of high-quality breeds. The CHRS also aims to control livestock diseases by providing vaccination and other preventive measures.
Option b) is incorrect because the CHRS does not aim to control livestock diseases. The scheme focuses on improving the genetic quality of livestock, not on controlling diseases.
Option c) is incorrect because the CHRS does not aim to provide veterinary services. The scheme focuses on improving the genetic quality of livestock, not on providing veterinary services.
Option d) is incorrect because the CHRS does not aim to promote fodder cultivation. The scheme focuses on improving the genetic quality of livestock, not on promoting fodder cultivation.