You are a health science professional and you encounter a situation where you believe that a child may be being abused. What do you need to do? Check with the parents to see if you can figure out what is going on.
Nothing, you do not have any concrete evidence.
Report your suspicion to the authorities.
Talk to the child and determine if they are safe

They probably don't understand either 1. what the nightmare is about or 2. his anxiety and stress

Unlike  ct scans, which use x-rays,  mri scans  use powerful magnetic fields and radio frequency pulses to produce detailed pictures of organs, soft tissues, bone and other internal body structures.  differences between  normal and abnormal tissue is often clearer on an  mri  image than a  ct.you can see more with a mri scan. for example on an mri you can see internal bleeding.

Ibelieve the answer is d. inaccuracy.hope my answer has you : )