Final answer:
The correct technology for reducing the CPU's operating frequency during less demand or battery operation is Power Management, which is used to conserve energy and manage heat generation.
Step-by-step explanation:
The technology that allows for reducing the operating frequency of the CPU during times of less demand or during battery operation is c) Power Management. This technique is often referred to as dynamic frequency scaling or CPU throttling. It helps in conserving power and reduces the amount of heat generated by the CPU. When the demand for processing power is low, power management features can reduce the clock rate to save energy and extend battery life in portable devices. It's different from CPU overclocking, which increases the frequency to improve performance, and from Turbo Boost, which increases CPU speed temporarily to meet demand. It also is not related to multithreading, which deals with executing multiple threads simultaneously to improve performance.