A) the death of his father
b) the attack by fortinbras
c) ophelia’s suicide
d) the accidental murder of polonius

The answer is a. the death of his father.  Apart from this it was the marriage of his mother Gertrude to Claudius, his uncle.  They thought this traumatized him.  In reality, he feigned insanity so that no one would know he was trying to prove his father died because of his uncle.

i disagree that there is little difference between adult female development and adult male development. sociological studies comparing female and male pathways to adulthood, revelead that there are sustancial differences between them. particularly, female and male differ from timing of marriage, when they began to live with children and the likelihood of combining wife/husband and parent roles.