Which of the following conditions results from an injury to the head, with symptoms including headache, dizziness, and vomiting?

A concussion is a type of traumatic brain injury that often results from a blow or jolt to the head, which disrupts normal brain function. Common symptoms such as headache, dizziness, and vomiting can occur immediately after the injury or develop in the hours or days following the event. These symptoms arise because a concussion affects the brain's ability to process information and maintain its normal physiological functions, leading to both physical and cognitive disturbances.

In contrast, a contusion refers to a bruise on the brain resulting from a direct impact, which may lead to localized symptoms depending on the area affected, but it doesn't predominantly present with the cluster of symptoms mentioned. Whiplash is a neck injury that results from rapid head movement, often associated with car accidents, and typically presents with neck pain and stiffness rather than the specific symptoms of headache, dizziness, and vomiting. A cerebral aneurysm involves a swelling in a blood vessel in the brain and may result in severe headaches and other symptoms like visual disturbances but doesn't typically manifest with dizziness and vomiting in the same context as a concussion. Thus, the presentation of symptoms makes concussion the most fitting condition for the question's criteria.