Final answer:
Headache, nausea and vomiting, and dizziness are more common in children than adults following an isolated head injury.
Step-by-step explanation:
The most common signs or symptoms that are more common in children than in adults following an isolated head injury are headache, nausea and vomiting, and dizziness.
Headache is a common symptom that can occur after a head injury, and it is often seen in both children and adults. However, children tend to experience headaches more frequently and may have more severe headaches than adults.
Nausea and vomiting are also common symptoms that can occur after a head injury. Children are more prone to experiencing these symptoms than adults due to the fact that their brains are still developing and are more susceptible to injury.
Dizziness is another symptom that is more commonly seen in children following a head injury. The inner ear, which helps with balance, is still developing in children, making them more prone to dizziness after a head injury.
Therefore, the correct answer is 4) All of the above signs or symptoms are more common in children than in adults following an isolated head injury.