What must be stated on the alcohol consumption warning sign?

The correct choice indicates that the warning sign must state, "WARNING: CONSUMING ALCOHOL MAY CAUSE BIRTH DEFECTS." This is a specific legal requirement in many jurisdictions, particularly in the context of public health. The rationale behind this requirement is to inform individuals, especially pregnant women, about the risks associated with alcohol consumption during pregnancy. Consuming alcohol can lead to fetal alcohol syndrome, which can cause serious developmental issues, making it crucial to include such warnings to protect public health.

The explicit warning serves as a clear notification to the public regarding the potential harm alcohol can inflict not only on individuals but also on unborn children, thereby emphasizing the importance of responsible drinking.