<prompt> A 10-month-old child presents with an abnormal inspiratory sound; mother complaints that the sound increases with cry, and decreases when the child sleeps in prone position. What would be the probable diagnosis?CroupAcute epiglottitisLaryngitisLaryngomalacia  <response>: d. LaryngomalaciaRef: Nelsons 20e p 2036Clinical Features of Laryngomalacia:Stridor is inspiratory, low pitched exacerbated by crying, agitation, or feedingResults from the collapse of supraglottic structures inwards during inspirationSymptoms appear within first 2 weeks of life increase in severity for up to 6 monthsStridor improves when the baby sleeps in prone position. 