<prompt> Moderately severe hearing loss:30-40 dB41-60 dB56-70 dB71-90 dB  <response>: Ans. c 56-70 dBRef. Dhingras ENT 6th ed.38 WHO classification for hearing loss:0-25 dBNormal hearing26-40 dBMild hearing loss41-55 dBModerate hearing loss56-70 dBModerately severe hearing loss71-90 dBSevere hearing loss 90 dBProfound hearing loss 