Sarah's mother, Stephanie, was not at home much when Sarah was very young, so Sarah's 12-year-old brother took care of her most of the time.Now that Sarah is approaching adulthood, she chain-smokes and drinks alcohol excessively.She has a difficult time forming close relationships since she is very jealous and never believes anyone really loves her.Sarah most likely had difficulty in which psychosexual stage of development according to Freudian theory?

A) Oral
B) Anal
C) Latent
D) Phallic

According to Freudian theory, the oral stage of psychosexual development occurs from birth to approximately 18 months of age, during which the primary source of pleasure and gratification is through the mouth (such as sucking). If the child does not receive adequate nurturing and care during this stage, it can result in oral fixation and later lead to behaviors such as smoking and alcohol consumption, as well as difficulty forming close relationships. Given that Sarah's mother was not present during her early years and her brother had to take care of her, her lack of nurturing during the oral stage may have contributed to her current behaviors and issues in forming close relationships.