Final answer:
The therapeutic effect of benzodiazepines is true; it results from potentiating the neurotransmitter GABA.
Step-by-step explanation:
The statement is true. The therapeutic effect of benzodiazepines results from potentiating the neurotransmitter GABA (gamma-aminobutyric acid). Benzodiazepines enhance the activity of GABA receptors in the brain, which leads to sedation, relaxation of muscles, decreased anxiety, and anticonvulsant effects. By enhancing the inhibitory effects of GABA, benzodiazepines help to balance brain activity and reduce over-excitation.