Final answer:
Psychotic delusions, depression, anhedonia, and rumination are all features of major depressive disorder.
Step-by-step explanation:
Psychotic delusions: Dane's belief that he is a hindrance to everyone he meets and that it would be better for everyone else if he were alone is an example of psychotic delusions in major depressive disorder.
Depression: Manny's persistent feelings of sadness and frequent crying, even when positive things are happening in his life, are characteristic symptoms of depression.
Anhedonia: Marie's loss of interest in maintaining her beloved garden and lack of pleasure in activities she once enjoyed indicate anhedonia, a common symptom of major depressive disorder.
Rumination: Genie's inability to stop thinking about her husband leaving her, even years after the event, is an example of rumination, which is commonly observed in major depressive disorder.