Which of the following neurotransmitters is associated with neuroticism

The answer would be : Serotonin 

Neuroticism refer to basic personality trait that studied in the field of psychology, such as fear, anxiety, jealousy, envy, etc

Serotonin is could affect one's neurotic state because It affect one's ability to develop in which a person experience a depressive state

Isay b but i'm not sure. 

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.