Ans. (a) Prediabetes(Ref: Robbins 9th/pg 1106; 8th 1131)Diagnostic criteria according to ADA and WHO: Presence of any 1 or more of the following-CriteriaDiabetesImpaired glucose tolerance (pre-diabetes)* Fasting plasma glucose>=126mg/dLbetween 100 and 125mg/dL* Random plasma glucose>=200mg/dL-* 2-hour plasma glucose during oral glucose tolerance test (OGTT) with 75 g>=200mg/dLbetween 140 and 199mg/dL* Glycated hemoglobin (HbA1C) level>=6.5%between 5.7% and 6.4%.