The holding register used by the clock task primarily determines: The frequency of the crystal oscillator. Option C
In a computer system, the clock task or clock module manages the system's timing and synchronization. The holding register, which is part of the clock system, is often responsible for holding values that control the frequency of the crystal oscillator.
The crystal oscillator generates the clock signal or pulse that synchronizes the operations and timing within the computer system. Adjusting the values in the holding register can affect the frequency at which the crystal oscillator operates, thereby influencing the system's overall timing and synchronization.