**Core Concept:** Ovarian cancer is a type of cancer that starts in the ovaries, a pair of female reproductive organs that produce eggs and hormones. Hereditary risk factors include mutations in genes like BRCA1 and BRCA2, which are involved in DNA repair and maintain the stability of the genome.

**Why the Correct Answer is Right:** The correct answer, **C. Ovarian conservation surgery**, involves removing the affected ovary(ies) and, if necessary, the fallopian tube and surrounding tissue to reduce cancer risk. This surgery is recommended for women with known BRCA mutations to decrease their risk of developing ovarian cancer.

**Why Each Wrong Option is Incorrect:**

A. **Salpingectomy (removal of fallopian tubes):** While salpingectomy reduces the risk of tubal cancer, it does not address the risk of ovarian cancer in women with BRCA mutations.

B. **Ovarian watchful waiting (observation without surgery):** This strategy does not effectively reduce the hereditary risk for ovarian cancer and may not detect early-stage cancer.

D. **Polypectomy (removal of polyps):** Polypectomy is a procedure to remove polyps in the colon unrelated to ovarian cancer risk reduction in women with BRCA mutations.

**Clinical Pearl:** The BRCA1 and BRCA2 mutations are associated with a significantly increased risk of ovarian, breast, and other cancers. Early detection and prophylactic surgery, like salpingo-oophorectomy (removing both ovaries and fallopian tubes), can significantly reduce these risks. However, this decision should be made in consultation with a genetic counselor and a gynecologic oncologist considering individual patient factors like age, family history, and personal risk factors.