Rachel has a pessimistic attitude. She worries incessantly about things and can never seem to see the positive side of life. Acc
ording to the biological perspective, Rachel's attitude could best be explained by low levels of a. glutamate.
b. serotonin.
c. dopamine.
d. adrenaline.
Having a pessimistic attitude shows having low levels of SEROTONIN. Being pessimistic shows that a person always thinks of the worst or always thinking negative. Some study states that low levels of serotonin will give a person a tendency to be depressed and to feel down.
Why?: " Vestigial organs are physical structures that were fully developed
and functional in an ancestral group of organisms but are reduced
and unused in the later species."
