Mikhaila is a 7-month-old infant who is consuming about 30 ounces of milk per day in addition to soft, fresh fruit and soft-cooked vegetables. When her hemoglobin is tested, the doctor reports a lower than normal value. What is the most likely cause of her low hemoglobin?
1) Iron deficiency
2) Vitamin C deficiency
3) Calcium deficiency
4) Protein deficiency