What is one of the main hazards associated with broken light bulbs in hazardous environments?

In hazardous environments, broken light bulbs primarily pose a significant risk because they can scatter glass shards. This is particularly dangerous as the sharp fragments can cause physical injuries to personnel working in the area. The presence of broken glass increases the likelihood of cuts, lacerations, and other injuries that can lead to additional hazards, such as slips or trips, especially in environments where safety and careful movement are paramount.

The other choices, while they may reflect potential concerns associated with lighting and visibility, do not represent the immediate and acute risk that shattered glass does. For instance, while broken bulbs could lead to reduced visibility due to the absence of light, the immediate physical danger from glass shards takes precedence as a more critical hazard in the context of workplace safety.