Which of the following is an example of a safety feature on electrical equipment?

Ground fault circuit interrupters (GFCIs) are a crucial safety feature on electrical equipment because they are designed to protect users from electric shock. They continuously monitor the flow of electricity in a circuit and can detect when the current is flowing along an unintended path, such as through a person's body. When such a fault is detected, GFCIs quickly cut off the power, thus preventing serious injury or death from electric shock.

This feature is particularly important in areas where electrical equipment is used near water, such as in healthcare settings, where patients may be at greater risk. GFCIs are essential for enhancing the safety of electrical installations and reducing the likelihood of electrocution hazards. Other options such as color-coded buttons, non-slip surfaces, and light indicators may enhance usability or ergonomics, but they do not specifically address the risk of electric shock in the same way that GFCIs do.