Respuesta :
Based on the fact that Joan cries out in the middle of the night and is frightened and also has no recollection of the event, this is most likely D. Sleep terrors.
What are sleep terrors?
This is a condition that some people go through where they are unable to sleep for too long because they wake up frightened about something that occurred.
They don't remember what happened but are still scared. Joan is going through this and so must be having sleep terrors.
Find out more on sleep terrors at https://brainly.com/question/1261273.