Which of the following is true about class libraries?

Class libraries are collections of pre-written code that can be used by developers to streamline their software development process. They provide reusable components, which means that instead of writing code from scratch for common functions or patterns, developers can leverage existing code that has been tested and optimized. This modular approach improves efficiency and reduces the likelihood of errors since the reusable components have likely been subjected to extensive use and testing.

While it might seem that class libraries could be tied to specific programming languages, many libraries are designed for cross-language use or are available in multiple languages. Additionally, class libraries extend beyond just data model definitions and can include a wide range of functionality, such as algorithms, user interface elements, and much more. Furthermore, they are not limited to front-end development; they are applicable in various contexts, including back-end and system-level programming. Thus, the assertion that class libraries provide reusable components for software development is accurate and reflects their essential role in programming across different environments and paradigms.