Final answer:
Allowing each worker to sleep in 15- to 30-minute increments is the most effective way to manage frustration and loss of focus in a major building collapse situation.
Step-by-step explanation:
The most effective way to manage the frustration and loss of focus in the scenario described is option d. allowing each worker to sleep in 15- to 30-minute increments.
During long and intense work hours, it is crucial to prioritize rest and sleep to prevent exhaustion and maintain mental and physical well-being. Allowing workers to take short breaks to rest and recharge can help them regain focus and perform their duties more effectively.
By providing regular opportunities for rest, workers can mitigate the negative effects of long hours and be better equipped to provide support to the injured individuals.