Problem: A 5-month-old boy is brought to the hospital by his maternal grandfather, who found him unattended at home. The child lives with his 34-year-old single mother in a large home. The mother received little prenatal care. The grandfather reports that the child exhibited bruising on previous visits. A physical examination of the child shows multiple bruises on the limbs and head. The child appears anxious and is crying inconsolably. Which of the following is the strongest risk factor for the child's condition? Looking for Assignment Help? A. Maternal age B. Lack of prenatal care C. Maternal socioeconomic status D. Grandfather's support