The error in use of insulin or overdose of insulin leads to cause severe hypoglycemia, seizures, coma and can be fatal. Hence, option D is correct.
A prolonged unconsciousness due to injury in brain area caused by an increase in blood pressure, bleeding, oxygen loss called as coma. This injury can be temporary or permanent.
In this state a person either alive, looks like sleepy but unresponsive to their respective surroundings.
Toxic-metabolic encephalopathy type of coma caused by illness, infection which lead to a brain dysfunctional condition.
Second type of severe unconsciousness is persistent vegetative state where the patient is unaware of their surroundings and incapable of voluntary movement.
Third is a temporary coma which is medically induced. It is a deep state of unconsciousness.
Thus, Option D is correct
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