**Core Concept**
Preoperative antibiotic prophylaxis is a crucial step in reducing surgical site infections in patients undergoing surgical procedures. The timing of antibiotic administration is critical to ensure that the antibiotic is present in adequate concentrations at the site of infection during the surgery.

**Why the Correct Answer is Right**
The ideal time to administer preoperative antibiotics is within 60 minutes before the surgical incision. This allows the antibiotic to reach adequate tissue concentrations at the time of surgery, thereby reducing the risk of surgical site infections. The administration of antibiotics too early or too late in relation to the surgical incision can lead to inadequate tissue concentrations, compromising the effectiveness of prophylaxis.

**Why Each Wrong Option is Incorrect**
**Option A:** Administering antibiotics more than 60 minutes before the surgical incision may result in a decrease in antibiotic concentrations at the time of surgery, increasing the risk of surgical site infections.

**Option B:** Administering antibiotics immediately after the surgical incision may not provide adequate tissue concentrations, as the antibiotic may not have reached the site of infection in sufficient time.

**Option C:** There is no evidence to suggest that administering antibiotics during the surgical procedure itself is effective in reducing surgical site infections.

**Clinical Pearl / High-Yield Fact**
Remember the "60-minute window" for preoperative antibiotic administration: administer antibiotics within 60 minutes before the surgical incision to ensure adequate tissue concentrations and reduce the risk of surgical site infections.

**Correct Answer:** C.