**Core Concept**
Surgical staging of ovarian cancer involves a comprehensive evaluation of the extent of disease spread, including assessment of peritoneal surfaces, lymph nodes, and adjacent organs. The goal is to accurately determine the tumor stage, which influences treatment planning and prognosis.

**Why the Correct Answer is Right**
Omental biopsy is not a standard component of surgical staging for ovarian cancer. The omentum, a layer of fatty tissue in the abdominal cavity, is often involved in ovarian cancer, but a biopsy is not typically performed during staging. Instead, the omentum is evaluated visually for tumor involvement, and a sample may be taken for histological examination if necessary. The correct surgical staging procedures include:

* Peritoneal washing: A sample of peritoneal fluid is collected to detect cancer cells.
* Peritoneal biopsy: A biopsy of the peritoneum is taken to assess for tumor involvement.
* Palpation of organs: A thorough examination of the abdominal organs, including the liver, spleen, and intestines, is performed to detect any tumor spread.

**Why Each Wrong Option is Incorrect**
**Option A:** Peritoneal washing is an essential component of surgical staging for ovarian cancer, as it helps to determine the presence of cancer cells in the peritoneal fluid.
**Option B:** Peritoneal biopsy is a standard procedure during surgical staging for ovarian cancer, allowing for direct assessment of tumor involvement in the peritoneum.
**Option D:** Palpation of organs is a critical component of surgical staging, enabling the evaluation of tumor spread to adjacent organs.

**Clinical Pearl / High-Yield Fact**
When performing surgical staging for ovarian cancer, it's essential to remember that a thorough examination of the peritoneal surfaces, including the omentum, is crucial for accurate tumor staging.

**✓ Correct Answer: C. Omental biopsy**