Which type of alarm is activated by normal cooking activities?

The correct choice is based on the understanding of different types of alarms and their activation criteria. An unwanted alarm refers to an alert that occurs due to non-emergency situations, which can include scenarios such as cooking activities where smoke or heat is generated that exceeds normal thresholds for a smoke detector.

In typical residential or commercial settings, cooking can often trigger smoke detectors if there is excessive smoke from burned food or steam that the detector misinterprets as smoke. This does not indicate a fire but rather a result of normal kitchen activities, thus designating it as an unwanted alarm.

Conversely, malicious alarms would imply intentional activation without cause, nuisance alarms are more associated with false activations due to reasons other than cooking, and emergency alarms are activated specifically during actual emergencies. Understanding this categorization helps in effectively managing alarm systems and improving response strategies to actual emergencies.