What is the consequence of inadequate maintenance of sprinkler heads?

Inadequate maintenance of sprinkler heads leads to increased fire risks because malfunctioning or obstructed sprinkler heads cannot effectively distribute water when needed. A sprinkler system's primary function is to suppress a fire by delivering water to the flames; if the heads are clogged, corroded, or improperly aligned, their performance will be compromised. This can result in insufficient water coverage over the fire area, allowing the fire to spread more rapidly and potentially leading to greater damage and higher danger to occupants and property.

In contrast to the correct answer, other options do not reflect the potential outcomes of poor maintenance of sprinkler heads. A reduced water supply does not directly stem from maintenance issues but could result from system design or water source issues. Improved fire protection and enhanced system efficiency are certainly not possible outcomes of inadequate maintenance; proper maintenance is essential for both of these aspects to work effectively.