What may occur if a sprinkler head is obstructed?

If a sprinkler head is obstructed, it will not function properly due to the blockage obstructing the water flow. An obstruction could be caused by various factors, such as physical objects, debris, or changes in the environment surrounding the sprinkler head. When a sprinkler is obstructed, it cannot distribute water as intended, which can result in insufficient coverage of the area it is designed to protect, ultimately compromising the effectiveness of the fire suppression system.

In contrast, the other options suggest outcomes that are either beneficial or counterintuitive to the issue of obstruction. For instance, saying the system will work more effectively or that the water supply will be enhanced implies improved performance, which contradicts the reality of an obstruction. Similarly, stating that the sprinkler will increase its flow rate is misleading; an obstruction would actually reduce or disrupt the flow rather than enhance it. Thus, understanding the implications of an obstruction is crucial for ensuring the effectiveness of sprinkler systems in fire safety.