Final answer:
The nurse giving the option to the 10-year-old girl's mother to either stay in the room or leave during the physical assessment is appropriate because of the child's age.
Step-by-step explanation:
The nurse giving the option to the 10-year-old girl's mother to either stay in the room or leave during the physical assessment can be interpreted as appropriate because of the child's age. At this age, children are usually developing autonomy and independence, so it is appropriate to involve them in decision-making. It allows the child to feel empowered and establishes trust with the nurse.