Harvard criteria are for -

Ans. is 'a' i.e. Brain death Harvard criteria Brain of deathIt is a set of 4 conditions as set by the Harvard School of Medicine for diagnosis of irreversible coma or brain death. They are:Unreceptivity and unresponsivenessLack of movements or breathingAbsent reflexesFlat electroencephalogram (confirmatory)These conditions also are to be met:Body temperature >= 32 CNot under the influence of CNS depressants