Which of the following is a major inhibitory neurotransmitter?
a.
acetylcholine
b.
glutamate
c.
norepinephrine
d.
gaba (gamma-aminobutyric acid)

the correct answer is ; d. gaba (gamma-aminobutyric acid). for psychology but there is not category for psychology so i selected social studies

D. GABA (gamma-aminobutyric acid) is the main inhibitory neurotransmitter that an adult vertebrate brain has.

Explanation:

An inhibitory neurotransmitter transmits impulses of inhibiting effects and therefore reduce the chances that a neuron shall give an action in response.The Inhibitory synaptic transmission uses GABA as the neurotransmitter that transmits inhibitory effects.This neurotransmitters are used to repress something such as controlling release hormones, through shutting down and opening the release factor in a bid to control the body.

You can do

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.