Answer:
c. Format text documents.
Explanation:
An operating system can be defined as a system software application that manages the interactions between the software and hardware resources of a computer, as well as providing essential services to other installed software applications.
The functions of the operating system of any computer is to;
1. Allocate memory.
2. Direct information flow in the system.
3. Provide a User interface.
Some examples of computer operating systems are Microsoft windows, Apple MacOS, Linux, Unix, Chrome OS etc.
The task of formatting text documents is performed by computer software applications such as Microsoft Word, notepad, wordperfect etc. Text formatting includes functions such as cut, paste, copy, bold, italics, font type, font size etc.