**Core Concept**
The body's response to a sudden increase in blood glucose levels in a diabetic patient involves the release of counter-regulatory hormones to stimulate glucose production and decrease glucose utilization.

**Why the Correct Answer is Right**
When blood glucose levels rise, the pancreas is stimulated to release glucagon, a hormone that acts on the liver to increase glycogen breakdown and glucose production. This process is mediated by the enzyme glycogen phosphorylase, which breaks down glycogen into glucose-1-phosphate. The glucose-1-phosphate is then converted to glucose-6-phosphate by the enzyme phosphoglucomutase, and finally to glucose, which is released into the bloodstream. This response is an essential mechanism to maintain blood glucose homeostasis.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not directly related to the body's response to a sudden increase in blood glucose levels in a diabetic patient.
* **Option B:** This option is incorrect because insulin is a hormone that decreases glucose production and increases glucose utilization, which is the opposite of the body's response to a sudden increase in blood glucose levels.
* **Option D:** This option is incorrect because the kidneys do not play a primary role in the body's response to a sudden increase in blood glucose levels in a diabetic patient.

**Clinical Pearl / High-Yield Fact**
In diabetic patients, the body's counter-regulatory response to a sudden increase in blood glucose levels can lead to hyperglycemia, which can cause serious complications such as diabetic ketoacidosis.

**Correct Answer: B. Insulin release is decreased.**