**Core Concept**
The patient's presentation suggests a severe abdominal injury leading to peritonitis and shock, necessitating prompt control of the source of bleeding and contamination. This scenario requires a multidisciplinary approach, involving surgical intervention to address the underlying cause of the patient's condition.

**Why the Correct Answer is Right**
The patient's hemodynamic instability and signs of peritonitis indicate the need for immediate surgical exploration to identify and repair the abdominal injury. This procedure allows for the control of bleeding, removal of contaminated tissue, and administration of antibiotics to prevent further infection. The use of two large bore cannulas for IV fluid administration is a crucial step in resuscitation, but it does not address the underlying cause of the patient's condition.

**Why Each Wrong Option is Incorrect**
**Option A:** Administering blood products without addressing the underlying cause of the patient's bleeding is not the next logical step in management.
**Option B:** Performing a CT scan in a patient with signs of peritonitis and shock would delay necessary surgical intervention and potentially worsen the patient's condition.
**Option C:** Administering antibiotics without surgical intervention would not address the source of the patient's infection and bleeding.

**Clinical Pearl / High-Yield Fact**
In patients with severe abdominal trauma and signs of peritonitis, prompt surgical exploration is essential to control bleeding, prevent further contamination, and improve outcomes.

**Correct Answer:** C. Administer antibiotics and prepare the patient for immediate surgical exploration.