What is the main role of FINRA?

The primary role of FINRA, the Financial Industry Regulatory Authority, is to regulate securities firms and protect investors. Established to oversee the broker-dealer industry in the United States, FINRA ensures that these firms operate fairly, transparently, and in accordance with established laws and guidelines. This involves creating and enforcing rules that govern the conduct of its member firms, investigating violations, and providing educational resources to help investors better understand their rights and the financial markets.

By focusing on investor protection, FINRA plays a crucial part in maintaining the integrity of the financial system. The authority conducts regular examinations of its member firms and oversees the implementation of compliance programs to protect against fraud and manipulation in the securities markets. Therefore, the correct answer captures the essence of FINRA's responsibilities and objectives within the financial industry.