Final answer:
To treat a conscious patient with mild insulin shock (hypoglycemia), it is appropriate to give fast-acting carbohydrates like glucose tablets, not an antihistamine, epinephrine, insulin, or oral hypoglycemic which are not suited for this condition.
Step-by-step explanation:
Insulin shock, also known as hypoglycemia, occurs when there is too little glucose in the bloodstream. For a conscious patient experiencing mild insulin shock, the immediate treatment is to administer a form of sugar to quickly raise blood glucose levels. The options provided are not all suitable for treating hypoglycemia. Specifically, an antihistamine and epinephrine are used for allergic reactions such as anaphylaxis, and insulin would worsen the hypoglycemia by lowering blood glucose levels even further. An oral hypoglycemic agent is used to lower blood glucose in diabetic patients and is not appropriate in this case. Instead, fast-acting carbohydrates like glucose tablets, fruit juice, or candy are commonly used for mild cases where the patient is conscious and able to swallow.