Which statement about electric tools is true?

Electric tools are designed to enhance efficiency and user experience in various applications. One of the key benefits of these tools is that they operate quietly and cleanly compared to many traditional manual tools. This quiet operation not only provides a more pleasant working environment but also reduces noise pollution in settings where multiple tools are in use or in noise-sensitive areas.

Additionally, electric tools typically incorporate features that minimize debris generation, such as built-in dust collection systems. This contributes to a cleaner workspace, making them preferable for both safety and efficiency reasons.

The other statements do not accurately represent the characteristics of electric tools. For instance, while some electric tools may produce noise, they generally do so at lower levels compared to manual tools, especially those that generate significant physical effort. Maintenance requirements for electric tools can vary but are often less extensive than those for mechanically simple manual tools, which might require regular checks for wear and tear. Lastly, electric tools are designed to be efficient, often outperforming manual tools in speed and effectiveness. This makes them a preferred choice in many applications rather than being less efficient.