Final answer:
When a client shows symptoms of hypoglycemia, the correct action is to give them a sugary snack or drink to quickly elevate blood glucose levels; insulin or exercise are not appropriate as they can worsen the condition.
Step-by-step explanation:
The correct course of action to take when the client is exhibiting symptoms of a hypoglycemic reaction is to give the client a sugary snack or drink. Administering a dose of insulin would further lower blood sugar levels, which is not the desirable action in hypoglycemia. Vigorous exercise is also not advisable as it can exacerbate the situation by further lowering blood glucose levels. Waiting for the symptoms to subside on their own could be dangerous as the client might need immediate action to elevate their blood glucose. Hypoglycemia is a condition characterized by abnormally low levels of glucose in the blood, which can lead to severe complications such as convulsions, weakness, tremors, fainting, coma, and even death, especially since the brain relies on glucose as its primary energy source.