Final answer:
An active PFC power supply converts energy more efficiently compared to other types. It improves the power factor and reduces energy wastage.
Step-by-step explanation:
An active PFC (Power Factor Correction) power supply converts energy more efficiently compared to other types. It helps to improve the power factor of electrical devices by reducing the amount of reactive power they draw. This results in less energy wastage and a more efficient use of electricity.
For example, let's say you have a gaming desktop with an active PFC power supply. When you're playing a graphics-intensive game, the power supply can adapt and deliver the required power more efficiently, ensuring that your computer receives a stable and optimal power supply.
Therefore, the correct answer to the question is A. Active PFC.