Question

which category of system software provides a platform for application software to run on?
operating system
utility software
firmware
device driver

Explanation:

The operating system manages computer hardware and software resources and provides common services for computer programs. It serves as a platform for application software to run. Utility software is for tasks like disk - defragmentation. Firmware is software embedded in hardware. Device drivers are for enabling communication between the operating system and hardware devices.

Answer:

A. Operating system