Which type of seizure is characterized by a sudden loss of muscle tone, leading to the person collapsing or falling down?

A. Tonic-clonic seizure. Tonic-clonic seizures involve both muscle stiffness (tonic phase) and jerking movements (clonic phase), but they are not characterized by a sudden loss of muscle tone. B. Myoclonic seizure. Myoclonic seizures involve brief, sudden jerks or twitches of a muscle or group of muscles, not the sudden loss of muscle tone. C. Atonic seizure. Atonic seizures, also known as "drop attacks," are characterized by a sudden loss of muscle tone, which causes the person to collapse or fall to the ground. This is the correct description of the type of seizure being asked about. D. Absence seizure. Absence seizures involve brief episodes of staring and loss of awareness but do not cause loss of muscle tone or collapsing.