I NEED HELP QUICK The computer's operating system
keeps confidential documents secure, copies information form one document to another, and transfers data across networks
O defrags the hard drive, saves data, and retrieves documents
O allocates the computer's resources and compresses files
O displays a GUI, allocates the computer's resources, and retrieves files

keeps confidential documents secure,

displays a GUI, allocates the computer's resources, and retrieves files

Explanation:

The operating system can be defined as the software installed in the system that provides the information and services to the users by controlling the hardware, software resources, and regulates the computer programs. It runs the applications and programs in the system, displays the graphic user interface for the services, stores, manipulates, and retrieves files. It prevents the unauthorized access to the data and programs by using passwords thus provides the security to the system and documents.

answer is c. complication