**Core Concept**
Non-ketotic hypoglycemia refers to a condition where blood glucose levels drop below a certain threshold without the presence of ketosis, which is a metabolic state characterized by elevated levels of ketone bodies in the blood. This condition is often seen in patients with certain medical conditions that impair glucose production or increase glucose utilization.

**Why the Correct Answer is Right**
The correct answer is related to the disorders that cause non-ketotic hypoglycemia. Non-ketotic hypoglycemia is commonly seen in patients with **hepatic glycogen storage diseases**, such as glycogen storage disease type I (GSD I), also known as von Gierke disease. In GSD I, the liver enzyme glucose-6-phosphatase is deficient, leading to impaired glucose release from glycogen stores. This results in hypoglycemia without ketosis.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because **insulinoma**, a type of pancreatic tumor that produces excess insulin, typically causes ketotic hypoglycemia due to the high insulin levels suppressing glucose production in the liver and promoting glucose uptake in peripheral tissues.
**Option B:** This option is incorrect because **renal glycosuria**, a condition characterized by excessive glucose excretion in the urine, usually presents with hyperglycemia rather than hypoglycemia.
**Option C:** This option is incorrect because **alcohol-induced hypoglycemia** is a type of ketotic hypoglycemia, where alcohol ingestion leads to impaired gluconeogenesis and increased glucose utilization.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that non-ketotic hypoglycemia can be caused by disorders that impair glucose production, such as glycogen storage diseases, whereas ketotic hypoglycemia is more commonly associated with disorders that increase glucose utilization, such as insulinomas.

**Correct Answer:** A.