During a Well-Child Visit,the Mother Tells the Nurse That Her

During a well-child visit,the mother tells the nurse that her 4-month-old infant is constipated,is less active than usual,and has a weak-sounding cry.The nurse suspects botulism and questions the mother about the child's diet.What factor should support this diagnosis?

A) Breastfeeding
B) Commercial formula
C) Infant cereal with honey
D) Improperly sterilized bottles