Question

Hannah is most likely in ____ of sleep if Delta wave activity has begun.

Answer 1

Hannah is most likely in stage 3 of sleep if Delta wave activity has begun.

Step-by-step explanation:

Hannah is most likely in stage 3 of sleep if Delta wave activity has begun. Stage 3 sleep is characterized by low frequency, high amplitude delta waves. In this stage, an individual's heart rate and respiration slow dramatically, and it is much more difficult to awaken someone from sleep than in earlier stages.