Unconsciousness, increased body temperature, rapid heartbeat, and increased blood pressure are symptoms of:

The symptoms described—unconsciousness, increased body temperature, rapid heartbeat, and increased blood pressure—are characteristic of a grand mal seizure. During a grand mal seizure, which is a type of generalized seizure, the individual may lose consciousness and experience violent muscle contractions. The physiological stress caused by the seizure can lead to an increase in body temperature due to muscle activity, and the body's response to stress often results in an elevated heart rate and blood pressure.

In a petit mal seizure, on the other hand, the person typically experiences brief lapses in consciousness without the dramatic physical symptoms seen in grand mal seizures. Hypoglycemia and hyperglycemia refer to low and high blood sugar levels, respectively, and while they can cause various symptoms, they do not typically present with the dramatic physical manifestations or loss of consciousness associated with a grand mal seizure. Therefore, the presence of the combination of symptoms provided strongly points to a grand mal seizure as the correct answer.