When operating a power tool, general tool safety includes which of the following:

Unplugging the tool when finished is a crucial safety measure during the operation of power tools. This practice helps to ensure that the tool cannot be accidentally started while it is being cleaned, maintained, or stored. It reduces the risk of electrical shock and prevents injuries that could occur from unintentional activation.

The other options do not align with general tool safety principles. For instance, while using power tools indoors can sometimes present hazards, it is not a blanket rule that power tools should never be used indoors, as many tools are designed for indoor use under safe conditions. Similarly, storing tools outdoors is not advisable, as exposure to weather elements can damage tools and make them unsafe or unusable when needed. Good tool safety involves clear guidelines on safe usage and maintenance rather than strict limitations on the locations or conditions of use.