INSOMNIA

The correct answer is B. Sleeplessness.

Insomnia is a common sleep disorder that can make it hard to fall asleep, hard to stay asleep, or cause you to wake up too early and not be able to get back to sleep. Insomnia can be short-term or long-term. Short-term insomnia is usually the result of stress, travel, or a change in routine. Long-term insomnia is more serious and may require treatment.

Lethargy is a state of drowsiness or sluggishness. It can be caused by