The level of the computer hierarchy where an operating system functions is the digital logic level system software level machine level control level

system software level

Explanation:

The level of the computer hierarchy on which an operating system works is the software level of the system.

This type of hierarchy allows computers to be able to solve problems of the most varied origin, with agility. Through the successive set of software that works in levels to guarantee the smooth functioning of the machine. In addition, this hierarchy allows the computer's software to be divided into groups with specific functions hierarchized at six levels, allowing the computer to be able to perform a variety of activities.