**Core Concept**
The primary supports of the uterus refer to the **pelvic floor muscles** and **ligaments** that directly attach to and support the uterus, maintaining its position within the pelvic cavity. These include the **round ligaments**, **broad ligaments**, and **cardinal ligaments**.

**Why the Correct Answer is Right**
Since the question is incomplete, let's discuss the general classification of uterine supports. The primary supports are crucial for preventing **uterine prolapse**. The **round ligaments** provide anterior support, while the **cardinal ligaments** offer lateral support.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific options, we cannot determine why each is incorrect.
**Option B:** Similarly, without the provided options, it's challenging to explain their incorrectness.
**Option C:** Each option's incorrectness would depend on its relation to the primary supports of the uterus.
**Option D:** The same principle applies, as the correct classification is necessary for evaluation.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that the **broad ligaments** are not primary supporters but rather serve as **peritoneal folds** attaching the uterus to the pelvic sidewalls.

**Correct Answer:** Correct Answer: D. Broad ligaments