A possible explanation for the effectiveness of ________ is that it may reduce depression by triggering the long-term potentiation of frontal lobe nerve cells.

A) EMDR
B) rTMS
C) Xanax
D) psychosurgery

The use of repetitive transcranial magnetic stimulation (rTMS) has been shown to have potential in reducing symptoms of depression by stimulating the frontal lobe nerve cells through long-term potentiation. EMDR mainly focuses on the treatment of trauma related mental health conditions, while Xanax is a medication used to treat anxiety disorders by regulating GABA neurotransmitters. Psychosurgery was used in the past to treat severe mental illness, but is no longer a commonly used treatment option due to its invasive nature and potential side effects.