**Core Concept**
Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia due to insulin deficiency or resistance. Cataracts are a potential complication of diabetes, resulting from the accumulation of sorbitol and other sugars in the lens, leading to osmotic swelling and eventual cataract formation.

**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of cataract formation in diabetes. The accumulation of sorbitol in the lens is a result of the enzyme aldose reductase converting glucose into sorbitol. This process is mediated by the polyol pathway, which is activated in the presence of high glucose levels. The osmotic swelling of the lens leads to cataract formation, which is a common complication of diabetes.

**Why Each Wrong Option is Incorrect**

* **Option A:** This option is not provided, but typically, cataract is not seen with conditions like myotonic dystrophy, which is a genetic disorder that affects muscle tone and is associated with cataracts. However, since we don't have this option, we'll proceed with the given options.
* **Option B:** This option is not provided, so we'll skip it.
* **Option C:** This option is not provided, so we'll skip it.
* **Option D:** This option is not provided, so we'll skip it.

**Clinical Pearl / High-Yield Fact**
It's essential to note that the development of cataracts in diabetes is often reversible with tight glycemic control, which can prevent the accumulation of sorbitol in the lens and subsequent cataract formation.

**Correct Answer:** Not provided in the question. Please provide the correct options for a complete explanation.