**Core Concept**
The scenario describes a patient with potential cervical spine injury, requiring careful handling to prevent further damage or exacerbation of the injury. The patient's inability to move, severe neck pain, and inability to turn his head are classic signs of cervical spine injury.

**Why the Correct Answer is Right**
The correct answer, C, involves carefully turning the patient onto his back, placing a support behind his neck, and transporting him to the hospital. This approach minimizes movement of the cervical spine, reducing the risk of further injury. The cervical spine should be immobilized in a neutral position, with the neck supported by a rigid collar or board, to prevent exacerbation of the injury. This is in accordance with the principles of spinal immobilization, which aim to prevent further movement of the spine and reduce the risk of secondary injury.

**Why Each Wrong Option is Incorrect**
**Option A:** Propping the patient up and giving him water to drink can exacerbate the cervical spine injury by increasing movement of the spine. This approach is not suitable for a patient with suspected cervical spine injury.

**Option B:** Turning the patient onto his face and rushing him to the hospital can also exacerbate the cervical spine injury by increasing movement of the spine. This approach is not recommended for a patient with suspected cervical spine injury.

**Option D:** Not moving the patient at all but carrying him to the hospital in the same position may not be sufficient to prevent further movement of the cervical spine. The patient's position should be carefully maintained to minimize movement of the spine.

**Clinical Pearl / High-Yield Fact**
In cases of suspected cervical spine injury, it is essential to maintain the patient's neck in a neutral position, with a rigid collar or board, to prevent exacerbation of the injury. This is a critical aspect of spinal immobilization and can significantly reduce the risk of secondary injury.

**✓ Correct Answer: C. He should be turned on his back and a support should be placed behind his neck and transported to the nearest hospital**

✓ Correct Answer: C. He should be turned on his back and a support should be placed behind his neck and transported to the nearest hospital