Regulatory agencies are government bodies responsible for creating and enforcing rules and regulations to protect public interests. They oversee various sectors, including finance, health, and the environment, ensuring compliance with laws and standards. Examples include the Food and Drug Administration (FDA) and the Securities and Exchange Commission (SEC). These agencies play a crucial role in maintaining safety and fairness in the marketplace. By monitoring industries and enforcing regulations, they help prevent fraud, ensure product safety, and protect consumers from harmful practices. Their work is essential for fostering trust in public and private sectors.