Which of the following is not a common hazard in fall-related injuries?

The choice of unsecured doors and windows as not a common hazard in fall-related injuries is supported by the context of typical fall risks in various settings. Fall-related injuries are most frequently associated with situations where individuals are elevated or where their footing is compromised, such as slippery surfaces or unsecured ladders. These scenarios directly contribute to the likelihood of losing balance or grip, leading to falls.

While unsecured doors and windows can pose safety risks in general, they are not typically categorized as direct hazards leading to falls. Instead, they might be factors in accidents such as entrapments or injuries from falls, but do not represent the same level of frequent, direct risk as the other options.

The key to understanding this question lies in identifying elements that create immediate dangers associated with falling while engaged in tasks that require elevation or mobility.