Under the Zero Tolerance Law, when must an officer suspend the license of a person under 21?

The correct answer focuses on the protocol surrounding the Zero Tolerance Law, particularly concerning individuals under the age of 21. Under this law, if a law enforcement officer suspects that a person under 21 has consumed alcohol and that individual refuses to take a Preliminary Alcohol Screening (PAS) test, the officer is mandated to suspend the person's driver's license. This provision is designed to discourage underage drinking and driving by imposing immediate consequences for refusal to comply with tests that assess alcohol consumption.

The emphasis on refusing the PAS test is critical because it signifies non-compliance with an alcohol-related investigation. Stipulating a specific legal framework for underage individuals helps deter the unlawful consumption of alcohol and emphasizes accountability.

In contrast, other options do not align with the specific criteria established under the Zero Tolerance Law. For instance, merely being involved in an accident does not automatically result in a license suspension under this law. While a blood-alcohol level of .05% or greater indicates the presence of alcohol, the law's focus for underage individuals is primarily on the behavioral act of refusal to submit to tests when suspected of drinking.