Answer:
All of the above.
Step-by-step explanation:
API is an acronym for application programming interface and it can be defined as a software intermediary (computing interface) comprising of sets of codes, tools and protocols that helps software applications and the computer to communicate with each other, as well enable the exchange of data. Some examples of popular APIs are Go-ogle, Face-book, Twitter etc.
The main characteristics and functions of an application programming interface (API) includes;
I. Allows different devices to connect with each other.
II. Allows for Interactivity between devices and software.
III. Messenger program that takes requests and delivers the response back to the user.
IV. Allows the creation of applications that access the features or data of an operating system, application, or other services.
V. Specifies how software components should interact.
VI. Used when programming graphical user interface (GUI) components