Final answer:
When a fire alarm system is activated immediately after the cover of a pull station is pulled down, it indicates the use of a manual pull station.
Step-by-step explanation:
If a fire alarm system is transmitted immediately after pulling down on the cover of a manual pull station, that person has used a manual pull station. The correct answer to the question is option 1) Manual. Manual pull stations are devices used in fire alarm systems that require a person to manually activate them. This is in contrast to automatic fire detection devices, such as smoke detectors, which activate automatically when they detect smoke or fire. Emergency pull stations are also manual stations but are often specified for other types of emergencies beyond fire alerts.