Answer:
d. depression.
Step-by-step explanation:
Research in Neuroscience points out that population showing depression lacks neurontrasmitters levels like serotonin and norepinephrine;presenting lower levels and so the imbalance of key hormones is suggesting this contributes to feelings of depression
In the last 50 years biological theraphy tries to remedy this by drug prescriptions that will stimulate hormones reabsrobtion
With low levels of serotonin have been often comes along with poor memory,low mood, difficult to sleep, low self-esteem,
Some recreational drugs function as they increase serotonin. Of course cognitive, medical or other therapies will be recommended