The explosion of government regulation in the United States has witnessed an accompanying social phenomenon of great importance which is:

a. the creation of the CAN-SPAM ACT.
b. the creation and widespread use of administrative agencies.
c. the creation and widespread use of the Federal Trade Commission.
d. the creation of antitrust laws.

The correct answer is letter "B": the creation and widespread use of administrative agencies.

Explanation:

The U.S. Administrative agencies are bodies of the government with the power of enforcing and rule diverse matters of the law. Examples of administrative agencies are the Central Intelligence Agency (CIA), Environment Protection Agency (EPA), Federal Trade Commission (FTC), and the Securities and Exchange Commission (SEC) to mention a few.

As each body has enough independence and authority to create rules of their competence (approved by Congress), the number of regulations has increased exponentially in the U.S.