Answer:
Delta waves
Step-by-step explanation:
All known data so far suggests that delta waves have little to do with consciousness. That is, they are never present during conscious states, on the contrary. At first they are present in the deepest states of sleep, that is, in the stages in which we dream nothing but states asleep.
In the case shown in the question above, we can see that Daisy's roommate repeatedly shakes her so she wakes up. This shows that Daisy was not waking up easily, which indicates she was in deep sleep. From this we can conclude that the brain waves that Daisy displayed before being awakened were the delta waves.