C. API An API (Application Programming Interface) is a set of rules that allows one software application to interact with another. In the context of interacting with a web application and making automated configuration changes, an API is commonly used. APIs enable automation by allowing scripts or programs to communicate with and manipulate the functionality of a web application. Options A (SSH), B (FTP), and D (GUI) are not typically used for making automated configuration changes in the context of web applications: - A. SSH (Secure Shell) is a protocol for secure remote access to systems but is not specifically designed for web application automation. - B. FTP (File Transfer Protocol) is used for transferring files and is not focused on configuration changes within a web application. - D. GUI (Graphical User Interface) refers to the visual interface that allows users to interact with a system, but it is not automated and requires manual user input.

By process of elimination this is pretty easily C, however, like many other questions this is so poorly worded imo.

orchestrated steps would have to run numerous automated scripts or API service calls, The simplest way of interfacing with a cloud service is to use the provider's website or application programming interface (API) over the Internet