Answer to Question 1
B
Single-parent families are most likely to be headed by mothers and are more likely to be financially disadvantaged.
Answer to Question 2
C
The scenario indicates a normal uterine involution with contractions that becomes more noticeable when breastfeeding, which facilitates involution. Uterine atony is a lack of uterine contractions. Retained placental fragments would interfere with uterine involution.