However, since the police are understaffed, there will be a riot. The meek shall inherit the earth. Susie received an inheritance from her grandfather, so she must be meek. During the Vietnam War, the powerful had to serve along with the poor. However, Stevens' father was a federal judge, so Steven was able to get a draft deferment.
All dolphins are mammals and all mammals breathe air.
Therefore, all mammals that breathe air are dolphins. The original argument clearly contradicts itself. So we are looking for an answer-choice that contradicts itself in like manner. In fact, it's a fairly sound argument. The police, though understaffed, may realize the seriousness of the situation and rearrange their priorities.