As a rule of thumb, the lower the grit on an abrasive nail file, the more: ______ its action will be?

The correct response indicates that a lower grit on an abrasive nail file leads to more aggressive action. Lower grit files have a coarser texture, which allows them to remove more material from the nail surface quickly. This is particularly useful when shaping or filing down natural nails or enhancements since the rougher surface can effectively address significant discrepancies in nail length or thickness.

In the context of nail care, it’s important to use the appropriate grit depending on the task at hand; coarse files (lower grit) are designed for faster, more forceful filing, while higher grit files offer a smoother finish. Understanding this principle is crucial for nail technicians as it allows them to choose the right tool for the desired outcome, ensuring client satisfaction and nail health.