Final answer:
The OTS is the government agency that regulates financial markets.
Step-by-step explanation:
The correct answer is d. The OTS.
Of the options given, the only government agency that regulates financial markets is the Office of Thrift Supervision (OTS). The OTS is responsible for overseeing federal savings associations and ensuring the safety and soundness of the country's thrift industry. It was merged with the Office of the Comptroller of the Currency (OCC) and the Federal Reserve in 2011 to form the Office of the Comptroller of the Currency.