Why are programming libraries used in development?

Programming libraries are used in development primarily to facilitate code organization and reuse. Libraries are collections of pre-written code that developers can utilize to perform common tasks, functions, or operations, which helps streamline the coding process. By leveraging libraries, developers can avoid writing repetitive code from scratch, thus saving time and effort.

Using libraries also promotes better organization within a codebase, as they allow developers to structure their projects more effectively by providing modular components that can be easily integrated and maintained. This modular approach enhances collaboration among developers, as it enables them to share and reuse components across different projects, leading to a more efficient development workflow.

In contrast to the other options, libraries do not primarily focus on reducing execution time, nor do they eliminate the need for documentation, which is essential for understanding and maintaining code. Additionally, while some libraries may support older programming languages, their main objective is not to provide support for outdated languages but to enable developers to leverage reusable and well-tested code in their projects.