Which of these actions must be taken to safeguard intellectual property?

Filing for patents, trademarks, or copyrights is essential for safeguarding intellectual property because these legal protections grant exclusive rights to the creators or inventors. Patents protect inventions, trademarks protect brand names and logos, and copyrights protect original works of authorship, such as literature and music. By securing these rights, individuals and businesses can prevent unauthorized use of their intellectual property, allowing them to control how it is used and to potentially monetize it through licensing or sales.

The other options, while they may support overall business strategy or brand management, do not provide the same level of legal protection. Regularly updating digital content helps ensure that information remains relevant but does not prevent others from using your original ideas. Developing trade secrets can provide a competitive advantage, but it relies on keeping certain information confidential rather than establishing legal ownership. Improving brand visibility can enhance market presence but does not directly protect the intellectual property itself. Hence, the action of filing for patents, trademarks, or copyrights is a fundamental step in safeguarding intellectual property effectively.