Which of the following is a method for controlling crowds?

Using stanchions is an effective method for controlling crowds because they help to create clear pathways and designated areas for movement. This physical barrier not only organizes the flow of people but also provides a visual guide that can lead individuals away from congested areas or potential hazards. Stanchions can be particularly useful in event settings where a large number of attendees need to be managed efficiently to maintain safety and order.

In contrast, simply increasing personnel might not be as effective if there is no clear structure for them to follow, and having police presence alone does not directly influence crowd dynamics without proper coordination. Heightened alertness from security guards is important for awareness and response but does not actively manage the crowd flow as a physical barrier like stanchions does.

Overall, using stanchions engages both organizational tactics and visual cues, which are essential components in effectively managing a crowd.