Answer:Passenger cabin windows on modern airplanes are rounded or elliptical for a few key reasons related to safety and structural integrity. First, rounded shapes are stronger than square or rectangular shapes, especially when dealing with the pressure changes that occur during flight. Second, rounded windows help distribute stress more evenly, reducing the risk of cracks or breaks. Third, the curved shape of the windows helps to minimize turbulence and wind buffeting, creating a smoother and more comfortable ride for passengers. Finally, rounded windows are less likely to shatter into sharp, dangerous fragments in the event of an accident or emergency. This makes them a safer choice for passengers and crew.HOPE IT HELPS YOU