Final answer:
To start the system setup program, a technician should press a specific key (such as F2, F10, F12, or Delete) before the OS boots. Correct setup is indicated by the system's expected behavior, while incorrect setup may generate error messages or instability.
Step-by-step explanation:
To start the system setup program, which is often referred to as the BIOS or UEFI firmware, a technician would generally use option B.) Press a certain key before the computer boots the operating system.
This key is typically a function key like F2, F10, F12, or Delete, and it must be pressed immediately after powering on the computer, during the initial boot phase before the operating system loads. Pressing this key will allow access to the BIOS or UEFI interface where various low-level system settings can be configured.
If a technician has set up the problem incorrectly, there may be error messages, system instability, or incorrect system behavior. If the problem is set up correctly, the expected results should be consistent, with the system booting as intended and the setup changes taking effect without issues.