Final answer:
The neurotransmitter associated with anxiety and dependency personality traits is serotonin, which plays a crucial role in mood regulation and emotional well-being in the CNS.
Step-by-step explanation:
The question 'High levels of this NT associated with anxiety, dependency (Clusters A and B)' is addressing the relationship between certain neurotransmitters (NTs) and psychological conditions such as anxiety and dependency personality traits. The correct answer to the question is c) Serotonin. This NT is known to be involved in mood regulation and alterations in serotonin levels have been implicated in various psychological conditions, including anxiety and dependency disorders.
Serotonin (5-hydroxytryptamine or 5-HT) figures prominently in the central nervous system (CNS) and has significant implications for mood control and emotional regulation. Dysregulation of serotonin levels has been associated with disorders such as depression, anxiety, obsessive-compulsive disorders, and phobic disorders, confirming its role in psychological well-being. This neurotransmitter is synthesized from tryptophan and has a vast network of projections throughout the brain, indicating its widespread influence on neuronal function.