Final answer:
The parent's statement about encouraging evening exercise before bedtime requires follow-up by the nurse.
Step-by-step explanation:
The statement made by the parent of a school-aged child that requires follow-up by the nurse is option a. "I encourage evening exercise about an hour before bedtime." While exercise is generally beneficial for overall health, doing vigorous exercise close to bedtime can actually interfere with sleep. It can increase alertness and adrenaline levels, making it difficult for the child to fall asleep.