For typical video surveillance, which of the following common surfaces has the lowest reflectance?

In video surveillance and lighting design, reflectance refers to how much light a surface reflects back to a camera. Surfaces with low reflectance absorb more light and appear darker, making visibility more challenging. Asphalt has the lowest reflectance among the listed options because it is a dark, dense material that absorbs most of the light rather than reflecting it. In contrast, snow-covered fields have very high reflectance, and sandy soil and brick surfaces reflect moderate amounts of light. From a Human Resource and workplace safety perspective, understanding surface reflectance is important when designing secure environments, as poor visibility can affect employee safety, monitoring effectiveness, and incident response. Proper lighting must compensate for low-reflectance surfaces like asphalt to ensure clear surveillance and maintain a safe and secure workplace.