Final answer:
Hypoglycemia is a medical emergency that occurs when there is an excess of insulin in the body, leading to dangerously low blood glucose levels.
Step-by-step explanation:
When there is too much insulin in the body, the medical emergency that can occur is b) Hypoglycemia. This condition happens due to an oversecretion of insulin, which reduces blood glucose levels excessively, resulting in insufficient glucose availability for cells. This can lead to symptoms like muscle weakness, sweating, tremors, fainting attacks, and, if severe and untreated, unconsciousness or even death. Over time, hypoglycemia can be very dangerous, and it indicates that the insulin dose for the treatment of diabetes mellitus may need to be adjusted.
It is important to differentiate hypoglycemia from hyperglycemia, which occurs when there is a high level of glucose in the blood, generally due to impaired insulin function or insufficient insulin production, leading to the body's inability to use glucose properly.