The Pediatric Nurse Practitioner Has a Small Toy Hooked onto the Stethoscope

The pediatric nurse practitioner has a small toy hooked onto the stethoscope and is observed to be humming at times during the physical examination of a child. The reason for the toy and humming is most likely:

A) to provide a distraction to increase cooperativeness
B) to entertain and keep the nurse in a good mood to work with children
C) something that has little to do with the examination of the child
D) to keep the child focused so he or she won't get into things in the exam room