Explanation:

The question asks for a type of program that facilitates the ease of use of a computer. Let's analyze each option: (A) An Operating System (OS) is fundamental software that manages computer hardware and software resources and provides common services for computer programs. While essential for using a computer, its primary role is not solely to 'make it easy to use' but to provide the foundational environment. (B) An Application program is designed for end-users to perform specific tasks (e.g., word processing, web browsing). Applications make a computer useful for particular purposes, but they don't inherently make the *computer itself* easier to operate or maintain in a general sense. (C) A Utility program is a type of system software designed to help analyze, configure, optimize, or maintain a computer. These programs perform specific tasks related to managing computer resources and improving system performance or user experience, such as disk cleanup, antivirus software, file compression, and backup tools. They directly contribute to making a computer easier to use and manage by providing tools for system health and convenience. This option perfectly aligns with the description. (D) A Network refers to a collection of interconnected computers and devices that can share resources. It is an infrastructure, not a program that makes a computer easy to use. \nTherefore, a Utility program is the most accurate answer as it specifically serves the purpose of making a computer easier to use and maintain.