<prompt> Most common cause of intermittent stridor in a 10 days old child is:LaryngomalaciaForeign bodyVocal noduleHypertrophy of turbinate  <response>: a LaryngomalaciaRef. Current Diagnosis Treatment Otolaryngology, Lalwani, 3rd ed., 481; Scott Brown, 8th ed., Vol 2; 333Rest of the options are not valid in a 10 days old neonate. 