Answer: B. It is applied to both hemispheres of the brain.
Step-by-step explanation:
ECT or electroconvulsive therapy is the treatment which is given for the treatment of depression, mental depression, suicidal patients, and others. In bilateral process one electrode is applied on the left and other on the right side of the brain. This way both hemispheres get the electrical treatment. Hippocampus and amygdala are two parts of the brain which are targeted in this process. These parts control the memory and emotion.