Which level of fire alarm system can be manually activated?

The correct answer is the manual pull station because this is specifically designed to be activated by individuals in the event of a fire or emergency. Manual pull stations are strategically located throughout buildings so that anyone who notices a fire can quickly activate the alarm system to alert other occupants and emergency services to the situation.

In contrast, monitored alarm systems are typically activated automatically in response to detected smoke or fire, following pre-programmed protocols. Fire suppressive alarm systems focus on extinguishing fires rather than alerting occupants. Automatic detection systems rely on sensors to trigger alarms without manual intervention. Thus, only the manual pull station allows for human activation in an emergency, making it the correct answer.