Which clinical finding is associated with inadequate maternal weight gain during pregnancy?
Correct Answer: D
Rationale: The correct answer is D: Low-birth-weight infant. Inadequate maternal weight gain during pregnancy is associated with an increased risk of delivering a low-birth-weight infant due to insufficient fetal growth and development. When a mother does not gain enough weight during pregnancy, it can result in the baby being born smaller than expected, which can lead to various health issues. Prolonged labor (choice A) is not directly linked to inadequate weight gain. Preeclampsia (choice B) and gestational diabetes (choice C) are more commonly associated with excessive weight gain or other factors. Therefore, the correct choice is D as it directly correlates with inadequate maternal weight gain.