What kind of lighting should be selected to enable security guards to observe intruders at a considerable distance beyond the perimeter?

• A. Soft lighting
• B. Infrared illumination
• C. Glare projection
• D. Flood lighting

Answer: (C)

To observe intruders at a considerable distance, you need lighting that reveals the area clearly over large distances. Flood lighting provides broad, even illumination across the perimeter, minimizing shadows where someone could hide and giving guards enough luminance to detect movement and identify intruders from afar. It’s designed to cover wide zones, which is exactly what you want for long-range observation.

Soft lighting, while gentle on eyes, doesn’t illuminate far enough to reveal distant activity. Infrared illumination relies on night-vision equipment, which isn’t always available or comfortable for all guards to use, and it doesn’t provide visible detail to those without devices. Glare would impede vision, creating blind spots and discomfort for observers.