Which of the following logic families requires maximum power?

The question seems to be incomplete as there are no options provided for the logic families. However, in general, among the common logic families like TTL (Transistor-Transistor Logic), CMOS (Complementary Metal-Oxide-Semiconductor), ECL (Emitter Coupled Logic), etc., the ECL logic family consumes the most power. This is due to its constant current flow design, even when there is no switching activity.