People with this sleep disorder experience sudden attacks of overwhelming sleepiness. a) insomnia b) sleep apnea c) narcolepsy d) night terrors

The answer is c) narcolepsy. Narcolepsy is a neurological condition that affects the brain's ability to regulate sleep-wake cycles. People with narcolepsy experience sudden and uncontrollable episodes of sleep, often at inappropriate times or in dangerous situations. These episodes can last from a few seconds to several minutes and can occur multiple times throughout the day. It is different from insomnia, which is difficulty falling or staying asleep, sleep apnea, which is a condition where breathing stops and starts during sleep, and night terrors, which are intense episodes of fear or anxiety during sleep.