B). identity foreclosure
The reason why answer choice "B). identity foreclosure" is the correct answer because this is what P.J is currently experiencing.
Identity foreclosure is when someone makes some kind of commitment without questioning themselves if they want to do it or not. People that experience this mostly gets their identity from their friends or parents.
In this case, P.J is getting his "identity" from his parents to be a lawyer or doctor in the future, and he accepted that. He feels unhappy about it because he doesn't want to be a doctor or lawyer, he wants to be a ballet dancer. The thing that makes this a "identity foreclosure" is when even though P.J doesn't want to be what his parents told him to be, he still accepted the decision that his parents said.
It's pretty much his parents choosing his identity and life for him, without having him get his input on what he wants to really be or be identified as.