Answer :
Answer: Option A) inhibits
GABA is a neurotransmitter that inhibits postsynaptic activity
Explanation:
Gamma amino butyric acid, GABA, is an inhibitory neurotransmitter in that, once released to the synapse, it inhibits or check muscular contractions by suspending further activity of the adjacent motor neuron.
Thus, by this mechanism, GABA inhibits postsynaptic activity