How many states are there in the Indian Union?

Answer: Option B

As of per September 2021, the 28 states in the Indian Union are: 1. Andhra Pradesh, 2. Arunachal Pradesh, 3. Assam, 4. Bihar, 5. Chhattisgarh, 6. Goa, 7. Gujarat, 8. Haryana, 9. Himachal Pradesh, 10. Jharkhand, 11. Karnataka, 12. Kerala, 13. Madhya Pradesh, 14. Maharashtra, 15. Manipur, 16. Meghalaya, 17. Mizoram, 18. Nagaland, 19. Odisha, 20. Punjab, 21. Rajasthan, 22. Sikkim, 23. Tamil Nadu, 24. Telangana, 25. Tripura, 26. Uttar Pradesh, 27. Uttarakhand, 28. West Bengal, Please note that the list may have changed, and it's always a good idea to verify the current status of states in the Indian Union from reliable sources.