<prompt> Obesity is defined as if BMI is -20504030  <response>: Ans. is d i.e., 30 Classification of adults according to BMIClassificationBMIRisk of comorbiditiesUnderweight18-50Low but risk of other clinical problems increasedNormal range18-50-24-99AverageOverweight:25-00 Pre-obese25-00-29-99IncreasedObese class I30-00-34-99ModerateObese class II35-00-39-99SevereObese class III40 00Very severe 