Which of the following describes the simplest form of technical cork?

The simplest form of technical cork is best described as pieces of cork bound with glue or plastic. This method utilizes small fragments or granules of cork, which are bound together to create a more uniform and structured product. This form of cork is often more affordable and consistent, providing a practical solution that maintains many of the qualities desirable in cork, such as flexibility and a degree of impermeability.

While the other options describe forms of cork that have specific applications or processing techniques, they do not represent the straightforward concept of technical cork as effectively. For instance, shredded cork compressed into molds refers to a method that can lead to sturdier forms but doesn't highlight the basic nature of technical cork. Natural cork cut into shapes pertains to maintaining the integrity of whole cork pieces rather than creating a technical blend. Lastly, cork dust formed into blocks suggests a process that could be less robust or more specific than the adhesive approach of binding pieces together.