Which of the following is a set of software tools commonly used in the creation and management of online applications?

The selected answer is the web application framework, which is a type of software framework specifically designed to support the development of web applications, including web services, web resources, and web APIs. A web application framework provides a structured way to build and manage applications by offering various components, libraries, and tools that streamline the process of coding and integrating application features.

Web application frameworks often include built-in functionalities such as routing, templating, and database interaction, which simplifies common tasks developers face when creating online applications. Popular examples include frameworks such as Django, Ruby on Rails, and Express.js.

While application frameworks also facilitate software development, they are more general and not exclusively tailored for web applications. A development environment refers to the setup (like an IDE or editor) in which developers write and test their code but does not encompass the specific set of tools and libraries for web application building provided by a web application framework. Content management systems are platforms for managing digital content rather than frameworks aimed at enabling developers to structure and build web applications.