Which of the following options is NOT true regarding credit cards?

The assertion that you should keep multiple credit cards for emergencies is not true and can be misleading. While having access to credit might seem beneficial for unexpected expenses, maintaining multiple credit cards can actually lead to increased chances of accumulating debt due to the ease of spending. Additionally, having numerous credit accounts requires careful management to avoid higher interest payments and potential financial strain.

On the other hand, the other statements highlight various truths about credit cards. For example, credit cards can indeed serve as educational tools for teenagers when they are taught responsible usage and financial management skills. They also play a crucial role in building a credit score when managed wisely, as timely payments and proper credit utilization can enhance a person's creditworthiness. However, it is also a fact that credit cards can lead to debt problems if not used judiciously, as the temptation to overspend can result in financial difficulties.