The most common types of sleep disorders are insomnia, sleep apnea, narcolepsy and sleepwalking" is an example of a

The most common types of sleep disorders are insomnia, sleep apnea, narcolepsy and sleepwalking" is an example of a central idea. The term central idea is a one-sentence statement that sums up or encapsulates the major ideas of a speech. It describes the main thought or principal theme and it  is the main point that the author is making.

Taking a shower. why is cause as you shower the water is running more than taking a bath, washing a load of dishes or brushing your teeth. water is being used more by taking a shower and depending on how many people live in the household that take showers. some take a shower twice a day.