Final answer:
Acetylcholine is not a biogenic amine neurotransmitter, as it is a compound formed from choline and acetyl coenzyme A, unlike the other options listed, which either are biogenic amines or, in the case of GABA, an amino acid neurotransmitter.
Step-by-step explanation:
The question of which substance is not a biogenic amine neurotransmitter can be answered by understanding the nature of biogenic amines. Biogenic amines are derived from amino acids and contain an amino group but lack a carboxyl group, and are not classified as amino acids any longer. Looking at the options provided.
Based on this information, the correct answer is Acetylcholine (D), since it does not fit the classification of a biogenic amine neurotransmitter.