Final answer:
Energy-efficient lighting refers to the use of lighting fixtures that consume less electrical energy compared to traditional lighting options such as incandescent lights. Compact fluorescent light bulbs (CFLs) and white LED lights are examples of energy-efficient lighting options that are more efficient and last longer.
Step-by-step explanation:
Energy-efficient lighting refers to the use of lighting fixtures that consume less electrical energy compared to traditional lighting options. One example of energy-efficient lighting is the compact fluorescent light bulb (CFL), which produces over four times more light per watt of power consumed than incandescent lights.
Another example is the white LED lights, which are even more efficient than CFLs and last 5 times longer. These energy-efficient lighting options not only reduce electricity costs but also have a reduced impact on the environment.