A city ordinance allowed the police to arrest young people who were loitering in any public place with no apparent purpose and failed to disperse when requested to do so by the police. Harmony (a student at State University) was arrested under the ordinance. What is Harmony's best legal challenge to her arrest?

The ordinance has no connection to public safety.

The ordinance is void for vagueness.

The ordinance gives power to the police.

The ordinance contains no reference to a state of mind.