Explanation:

The Indian Banks' Association (IBA) is not a regulatory body but rather an association of banks. It works towards enhancing the efficiency and profitability of the banking sector through collective efforts and represents the banking industry in discussions with the government and other bodies. RBI (Reserve Bank of India), SEBI (Securities and Exchange Board of India), IRDAI (Insurance Regulatory and Development Authority of India), and FSDC (Financial Stability and Development Council) are regulatory bodies overseeing banking, securities, insurance, and financial stability, respectively.