Answer :
Final answer:
For a healthy, exclusively breastfed 1-month-old infant, supplementation with vitamin D is recommended due to breast milk's insufficiency in providing the recommended daily dose for infants.
Explanation:
The question pertains to the recommended supplementation for a 1-month-old, full-term exclusively breastfed infant, who is healthy with normal growth parameters. While breast milk provides numerous nutritional benefits, it lacks sufficient amounts of certain nutrients, most notably vitamin D. Vitamin D is essential for calcium absorption and bone growth, and breast milk provides less than 20% of the recommended dose for infants. Given that deficiency of vitamin D can lead to rickets and other bone problems, and that sunlight exposure which helps in vitamin D synthesis, might be limited in certain geographical areas, many pediatricians recommend vitamin D supplementation for breastfed infants.