A client who is in her 6th week of gestation is being seen for a routine prenatal care visit. The client asks the nurse about changes in her eating habits that she should make during her pregnancy. The client informs the nurse that she is a vegetarian. The nurse knows that she has to monitor the client for which of the following risks arising from her vegetarian diet?

a) Increased risk of constipation
b) Iron-deficiency anemia
c) Low gestational weight gain
d) Decreased mineral absorption
e) Risk of epistaxis