The regulatory agency that creates media and Internet regulations is the Federal Communications Commission (FCC). Here's why:
1. The FCC is responsible for regulating interstate and international communications by radio, television, wire, satellite, and cable in the United States.
2. The FCC's role includes overseeing media ownership, content, and ensuring fair competition in the media and telecommunications industries.
3. The FCC plays a crucial role in setting policies related to net neutrality, spectrum allocation, broadcast standards, and other regulations that impact the media and Internet landscape.
4. Unlike the other options listed (Federal Reserve System, U.S. Postal Service, U.S. Food and Drug Administration), the FCC specifically focuses on regulating media and telecommunication industries, making it the correct choice for this question.