The correct option is B GABA
Gamma-aminobutyric acid (GABA) is a neurotransmitter. It is an inhibitory neurotransmitter, i.e, it inhibits neural responses, calm down the activity of the brain. It treats anxiety naturally. Adrenaline is a stress hormone. Acetylcholine is a neurotransmitter that is found between neurons. Norepinephrine is synthesised from dopamine and released is a hormone and functions as a neurotransmitter affecting the heart. So, the correct answer is option A.