**Core Concept**
The female pelvis is characterized by a wider pelvic outlet, a larger subpubic arch, and a more rounded pelvic brim compared to the male pelvis. This anatomical distinction is essential for facilitating childbirth and supporting the reproductive organs.

**Why the Correct Answer is Right**
The key features that differentiate the female pelvis from the male pelvis are the wider pelvic outlet and the larger subpubic arch. These features allow for a greater degree of flexibility and expansion during childbirth, enabling the baby to pass through the birth canal more easily. The female pelvis also has a more rounded pelvic brim, which contributes to its larger size and capacity.

**Why Each Wrong Option is Incorrect**
**Option A:** Not applicable (this option is missing).
**Option B:** The female pelvis is not characterized by a narrower subpubic arch. In fact, the female pelvis has a larger subpubic arch, which is one of the key features that differentiate it from the male pelvis.
**Option C:** The female pelvis is not characterized by a smaller pelvic outlet. In fact, the female pelvis has a wider pelvic outlet, which is essential for facilitating childbirth.
**Option D:** The female pelvis is not characterized by a smaller size. In fact, the female pelvis is generally larger than the male pelvis, particularly in the outlet and brim areas.

**Clinical Pearl / High-Yield Fact**
The female pelvis is designed to accommodate the reproductive organs and facilitate childbirth, whereas the male pelvis is more suited for supporting the urinary and reproductive organs. Understanding these anatomical differences is essential for obstetricians and gynecologists to provide effective care.

**Correct Answer: C. Larger subpubic arch.**