The chemicals, neurotransmitters are released to carry a nerve impulse which is an electric signal transmitted by the nervous system. This impulse transmitted from one neuron to another. Examples of neurotransmitters are serotonin in which scientists thinks that a low level of this is one of the causes of depression.
Hunting, I believe. Hope this helped
B.
The other options all tell you the type of nucleic acid it is.
Bacteria, archaea, fungi, algae
