Which statement about continuous-drive tools is true?

Continuous-drive tools are specifically designed to maintain a consistent speed even when under load. This characteristic is vital in ensuring that the tool performs optimally regardless of the resistance encountered during use, which can occur when drilling into tougher materials or when the cutting tool encounters varying densities in the workpiece.

The ability to maintain speed enhances efficiency and precision since the user can rely on consistent performance without worrying about the motor stalling or slowing down. This is particularly important in manufacturing and construction environments where time and quality are critical.

In contrast, other options may not hold true for continuous-drive tools. While some continuous-drive tools may operate at variable speeds, that isn't a defining characteristic; rather, their key feature is stability under load. Additionally, they don’t necessarily require multiple batteries, as many are designed to run efficiently on a single power source. Lastly, continuous-drive tools can be engineered to be quite powerful, so they do not inherently lack power compared to other types of tools.