How can escalator components affect energy efficiency?

The correct choice highlights how escalator components can directly influence energy efficiency through the implementation of energy-efficient motors and controls. These advanced motors and control systems are designed to optimize power consumption, leading to significant reductions in energy use while maintaining performance. Energy-efficient components can adjust their energy output based on demand, ensuring that power is not wasted when the escalator is not in heavy use.

In contrast, other options, while they may contribute to certain operational aspects of escalators, do not focus on energy efficiency as effectively. For instance, brighter lighting can improve visibility and safety, but it does not inherently reduce power consumption. Utilizing heavier step materials may improve durability but could also increase energy use when operating the escalator due to the additional weight unless specifically designed for energy efficiency. Having multiple speed options can enhance user experience but may not necessarily lead to overall energy savings if the escalator operates inefficiently at certain settings. Thus, the emphasis on energy-efficient motors and controls fundamentally addresses the goal of reducing energy consumption.