Final answer:
The underlying cause mentioned in the question is an electrical disturbance in the nerve cells of the brain, leading to abnormal electrical discharges. The correct answer is c. electrical, which plays a critical role in the functioning of the nervous system.
Step-by-step explanation:
The underlying cause is an electrical disturbance (dysrhythmia) in the nerve cells in one section of the brain. These cells emit abnormal, recurring, uncontrolled electrical discharges. The correct answer is c. electrical. In the context of the brain and the nervous system, dysrhythmia is typically associated with the electrical activity in nervous cells which can lead to conditions such as epilepsy or other seizure disorders.
Electrical activity is crucial in the functioning of the body's nervous system, including the brain and heart. For instance, during routine physicals, doctors test for problems with the electrical activity of the heart using an ECG. Similarly, in the brain, certain conditions can lead to abnormal electrical impulses which are manifestations of neurological disorders.