Which of these issues is LEAST important in lighting residential outdoor areas?

In the context of lighting residential outdoor areas, providing high light levels is generally considered the least important issue compared to the others listed. Outdoor lighting should primarily enhance safety, security, and the aesthetic appeal of the space rather than simply maximizing brightness. Overly bright lighting can lead to issues such as light pollution, disruption of wildlife, and discomfort for residents and neighbors.

Shielding exposed light sources is crucial to prevent glare, protect nocturnal wildlife, and maintain a pleasant night-time environment. Ensuring that foliage growth is taken into account is important for maintaining the light's effectiveness over time, as plants can obstruct light paths and diminish illumination. Lastly, the location of the light source significantly affects how well spaces are illuminated and can impact safety and usability.

Thus, while high light levels can have their place in specific scenarios, they are not as critical as the other considerations aimed at creating a well-balanced and functional outdoor lighting environment.