I believe the answer is a deep oceanic trench. Hope this helped! <3
A weather station model can be used to find the speed of the wind and direction. C.
The doctor uses an EEG or also known as
Electroencephalography, this is used to record the activity of the brain,
electrically. This will help the doctor make a proper diagnosis of Ronald even
if he’s sleeping and to view what type of disorder he has with the given
results.
