In freud's theory, if a parent overindulges or frustrates the child's expression of pleasurable feelings at a particular psychosexual stage of development: the ego may not develop. the child may experience fixation and continue to seek pleasure through behaviors associated with the particular psychosexual stage. the parent will experience the psychological influence of the superego, which will promote strong feelings of guilt and inferiority. the child will experience reaction formation and behave in a way that is directly opposite to the frustrated desires.

The correct answer is the child may experience fixation and continue to seek pleasure through behaviors associated with the particular psychosexual stage.

For instance, if a parent overindulges or frustrates a child's expression during the oral stage by weaning a child off breast milk or pacifiers too early, the child might develop an oral fixation that leads him or her indulge in activities such as smoking, overeating or nail-biting. Similarly, if a child is toilet trained too early or strictly, he or she might develop an ana-retentive personality - being overly rigid, structured and orderly.