During a POST the computer would have checked to ensure that all equipment required to boot is properly working. Of the 4 choices, the only part required for BOOT is a proper memory configuration. Heat sinks, hard drives, and IDE/SATA Cables are not needed to pass POST, which makes them irrelevant to the question.
A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on.
This article mainly deals with personal computers, but many other embedded systems such as those in major appliances, avionics, communications, or medical equipment also have self-test routines which are automatically invoked at power-on.
The results of the POST may be displayed on a panel that is part of the device, output to …