Final answer:
Maternal hypertension, premature rupture of membranes, postterm pregnancy, and maternal smoking are risk factors for meconium aspiration syndrome.
Step-by-step explanation:
Meconium aspiration syndrome is a condition where a newborn inhales meconium, which can lead to respiratory problems. Risk factors for meconium aspiration syndrome include maternal hypertension, premature rupture of membranes, postterm pregnancy, and maternal smoking. These factors can contribute to fetal distress and hypoxia, increasing the likelihood of meconium being inhaled into the lungs.