Final answer:
The best guidance for a parent regarding the development of a young school-aged child is to tolerate shyness and understand the occurrence of nightmares, encourage but not mandate participation in group activities, and avoid punishing acts of independence to support healthy autonomy.
Step-by-step explanation:
Concerning the normal development of a young school-aged child, the appropriate guideline for the nurse to give a parent would be that the child's periods of shyness should be tolerated, as this is a common characteristic in this developmental stage and can be attributed to the child's evolving sense of self and social awareness. Nightmares are also relatively characteristic at this age and should be addressed with understanding and comfort. Moreover, while encouraging participation in group activities is beneficial for social development, it should not be mandated as this disregards the child's individual pace and preferences for social interaction. Punishment for acts of independence is generally not recommended, as fostering a healthy sense of autonomy is crucial during this stage.