The correct answer is A) Security and Exchange Commission.
The New Deal Agency related to what President Roosevelt was speaking about this quotation is the Security and Exchange Commission.
President Roosevelt is referring in his quotation to the strict supervision of banking, credit, and investment. To end to speculation and the provision for an adequate currency. That is why he created the Security and Exchange Commission, to protect investors, keep an eye on markets and maintain a healthy financial environment for the investment of money.