On systems where there are multiple operating system, the decision to load a particular one is done by _____________

The decision to load a particular operating system on systems where there are multiple operating systems is done by the Boot Loader.

Here are the steps:

1. When you power on your computer, the BIOS (Basic Input Output System) or UEFI (Unified Extensible Firmware Interface) is loaded. This is firmware that is built into the motherboard of the computer.

2. The BIOS/UEFI starts the boot process and looks for the Boot Loader.

3. The Boot Loader is a small program that is designed to load and start the operating system. If there are multiple operating systems, the Boot Loader will present a menu and allow the user to select which operating system to load.

4. Once the user makes a selection, or a default selection is made after a certain time period, the Boot Loader will load the selected operating system into memory and start it up.

5. The operating system then takes over control of the computer and the Boot Loader's job is done until the next time the computer is started.