Final answer:
Only those workers engaged in the work and covered by a fall protection plan or the designated safety monitor are authorized to enter an area protected by a safety monitoring system.
Step-by-step explanation:
The area protected by a safety monitoring system is typically restricted to certain individuals to ensure safety and compliance with occupational health and safety regulations. In general, only authorized individuals who are engaged in the work being performed and who are covered by a fall protection plan should enter such areas. This often includes workers engaged in roofing work or other activities where fall hazards exist, and they must be familiar with the safety procedures and monitoring protocols in place. A designated safety monitor, who has the responsibility to ensure that safety practices are followed, is also authorized to be in the monitored area.