What color must the license plate light be?

Answer: D — White

The license plate light must be white to ensure that the plate is properly illuminated and easily readable by law enforcement and other drivers. A white light provides clear visibility of the letters and numbers on the license plate, which is essential for identification purposes, especially during nighttime or low-light conditions. Using other colors, such as red, blue, or amber, could hinder visibility or be misleading, as these colors do not provide the same level of contrast against the plate background. Additionally, specific color regulations help to standardize vehicle identification across states, promoting safety and straightforward communication on the road.