A computer handles several interrupt sources of which the following are relevant for this question. • Interrupt from CPU temperature sensor (raises interrupt if CPU temperature is too high) • Interrupt from Mouse (raises interrupt if the mouse is moved or a button is pressed) • Interrupt from Keyboard (raises interrupt when a key is pressed or released) • Interrupt from Hard Disk (raises interrupt when a disk read is completed) Which one of these will be handled at the **HIGHEST** priority?

Hardware interrupts that indicate critical hardware malfunctions or emergency events (such as power failure, memory parity error, or critical temperature warnings) are non-maskable or assigned the highest priority to prevent physical hardware damage and catastrophic failure.

• CPU temperature sensor interrupt: Represents a critical condition that may cause hardware destruction if not handled immediately (e.g., throttling CPU or emergency shutdown).

• Hard Disk / Keyboard / Mouse interrupts: Normal standard I/O device interrupts that operate at lower priority levels.

Therefore, the CPU temperature sensor interrupt is handled with the HIGHEST priority, corresponding to option (D).