<prompt> When the patient fails to understand normal speech, but can understand shouted or amplified speech the hearing loss, is termed -Mild hearing lossModerate hearing lossSevere hearing lossProfound hearing loss  <response>: Ans. is c i.e., Severe hearing loss o WHO recommended the following classification on the basis of pure tone audiogram.Hearing threshold in better ear average of 500, 1000, 2000HzDegree of impairment WHO classificationAbility to understand speech0-2526-4041-5556- 7071-91Above 91Not significantMildModerateModerately severeSevereProfoundNo significant difficulty with faint speechDifficulty with faint speech, requent difficulty with normal speech.Frequent difficulty even with loud speechCan understand only shouted or amplified speechUsually cannot understand even amplified speech 