The nurse is educating a parent on when to give an injection of growth hormone. The nurse correctly informs the parent that:

Rationale: A. Growth hormone is naturally secreted mostly at night during deep sleep. Administering injections before bedtime mimics this natural pattern and optimizes effectiveness. B. Growth hormone does not typically cause sleep difficulties that require morning administration. C. Middle of the day is not ideal because it does not align with the body’s natural hormone secretion cycle. D. Growth hormone generally does not interfere with concentration or cognitive function.