What happens to liquid contact indicators when exposed to moisture?

Liquid contact indicators (LCIs) are designed to signal exposure to moisture or liquid. When these indicators come into contact with water or other liquids, they undergo a chemical reaction that causes them to change color. In many cases, this color shift is to a shade of pink or red, which clearly indicates that the device has encountered moisture.

This behavior is critical for technicians when assessing whether a device has been damaged by liquid exposure. The visibility of this color change aids in the diagnostic process, ensuring that the technician can take appropriate actions for repair or service.

The other outcomes, such as turning yellow, black, or remaining white, do not generally apply to standard LCIs used in Apple devices. Each of those colors would not typically indicate moisture exposure as effectively as the shift to pink or red does. Therefore, the correct answer reflects the appropriate response of the liquid contact indicators under moisture exposure.