Final answer:
The best defense against consumer fraud is educating yourself about credit card risks.
Step-by-step explanation:
The best defense against consumer fraud is educating yourself about credit card risks. By understanding common scams and how to protect yourself, you can avoid falling victim to fraud. Signing up with the National Do Not Call Registry and calling the Federal Trade Commission (FTC) are also helpful actions, but they may not directly address consumer fraud as effectively as education about credit card risks.