**Core Concept**
The question is testing the student's understanding of a defense mechanism used by patients to avoid discussing sensitive information, in this case, their blood sugar level.

**Why the Correct Answer is Right**
The correct answer is an example of a **"red herring" or a "diversionary tactic"**, where the patient tries to distract the examiner from the actual question by providing unrelated information. This is a common defense mechanism used by patients to avoid discussing sensitive or uncomfortable topics. In this case, the patient is using a statement about the characteristics of urine and faeces as a diversionary tactic to avoid answering the question about their blood sugar level.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it is not a recognized defense mechanism or psychological term.
* **Option B:** This option is incorrect because it is not related to the patient's behavior in this scenario.
* **Option C:** This option is incorrect because it is not a valid psychological or medical term.

**Clinical Pearl / High-Yield Fact**
This type of behavior is often seen in patients who are anxious or fearful about discussing sensitive information, such as their medical history or test results.

**Correct Answer:** C.