Which signs and symptoms are indicators of a fracture?

The presence of swelling, loss of pulse in the injured arm or leg, and crepitus under the skin are significant indicators of a fracture. When a bone breaks, it can lead to inflammation, which manifests as swelling in the affected area. The loss of pulse indicates that the injury may have compromised blood flow, which is critical information in assessing the severity of the fracture and the overall condition of the limb. Additionally, crepitus, which refers to the grating sensation or sound that occurs when fractured bone ends move against each other, is a classic symptom associated specifically with fractures.

Overall, these signs collectively suggest a serious injury that involves bone and potentially vascular compromise, making option C the correct and most informative choice regarding indicators of a fracture.