a. Electroencephalogram (EEG)
b. Positron emission tomography (PET)
c. Electrical stimulation
d. Magnetic resonance imaging (MRI)
Answer:
d. Magnetic resonance imaging (MRI)
Explanation:
Magnetic resonance imaging is a type of non-invasive medical imaging technique that produces three-dimensional (3-D) images with the aid of powerful magnetic fields and gradients together with radio waves. This MRI test of the brain helps the doctor to view the brain in slices and can be used in detecting brain tumors and injury as well as other brain related problem. It is a safe and painless test.