<prompt> Basal skull view submentovertical view X-ray is best to visualizeEthmoid sinusFrontal sinusSphenoid sinusMaxillary sinus  <response>: Best view for maxillary sinus Waters view occipito-mental viewBest view for frontal sinus Caldwell view occipito-frontal viewBest view for sphenoid sinus Basal view submentovertical view 