Why should workers be cautious around insulated or conductive objects?

The correct choice emphasizes the crucial safety consideration that insulated or conductive objects may be energized. In electrical environments, there is always a risk of these objects having a voltage present due to faults, previous work, or even back feed from circuits that are thought to be de-energized. This potential for lethal electrical energy means that workers must always assume these objects could be dangerous, unless they have verified otherwise with appropriate testing and safety measures.

Being cautious around such objects is a fundamental principle of electrical safety, as it helps prevent accidents, injuries, or fatalities that can result from unintentional contact with energized equipment. Other options do not accurately reflect the inherent risks associated with working around electricity; they either suggest a false sense of security or limit the context in which caution is needed.