Kendra is a 15-year-old girl who has been experiencing menstruation since she was 12 years of age. during her monthly period she loses some hemoglobin, the matter in red blood cells that carries oxygen. in order to replace this hemoglobin in her body, she should make sure she eats a diet that has adequate amounts of ________.
a. potassium
c. vitamin d
b. iron
d. riboflavin