If you wanted to monitor the electrical activity of the brain over time,what recording device should you use

A)  EEG
B)  MRI 
C)  CT
D)  PET

EEG (electroencephalography) is the best choice for monitoring the electrical activity of the brain over time. It measures the electrical activity in the brain using electrodes placed on the scalp, and can provide information on brain wave patterns and activity. MRI (magnetic resonance imaging), CT (computed tomography), and PET (positron emission tomography) are imaging techniques that can provide structural or metabolic information about the brain, but do not directly measure electrical activity in the same way as EEG.