Option 1: A-4, B-2, C-1, D-3

According to this option, the Institute of Indian Systems of Medicine located in Kolkata is associated with Unani Medicines, the National Institute of Homoeopathy is located in Jaipur, the National Institute of Ayurveda is located in Chennai, and the National Institute of Siddha is located in Bengaluru.

Option 2: A-3, B-1, C-2, D-4

According to this option, the Institute of Indian Systems of Medicine located in Kolkata is associated with Ayurveda, the National Institute of Homoeopathy is located in Chennai, the National Institute of Ayurveda is located in Jaipur, and the National Institute of Siddha is located in Bengaluru.

Option 3: A-4, B-1, C-2, D-3 (Correct Answer)

According to this option, the Institute of Indian Systems of Medicine located in Kolkata is associated with Unani Medicines, the National Institute of Homoeopathy is located in Jaipur, the National Institute of Ayurveda is located in Chennai, and the National Institute of Siddha is located in Bengaluru. This option matches the given location and systems of medicine correctly