Respuesta :
Answer:
The correct answer is - irregular sleep-wake type.
Explanation:
Circadian rhythm is a biological clock that keeps on moving in the background of the brain. It is moving in between the sleepiness and tiredness cycles in 24 hour period of time.
The sleep-wake cycle is another name for the circadian rhythm, The irregular sleep-wake type of circadian rhythm that breaks in a minimum of 3 periods of 24 hours. Such type of circadian rhythm may cause insomnia in the nights but the day times would be sleepy.
Thus, the correct answer is - irregular sleep-wake type.