Question

from \why is sleep important?\ the national heart, lung and blood institute
1 sleep plays a vital role in good health and well - being throughout your life. getting enough quality sleep at the right times can help protect your mental health, physical health, quality of life, and safety.
2 the way you feel while youre awake depends in part on what happens while youre sleeping. during sleep, your body is working to support healthy brain function and maintain your physical health. in children and teens, sleep also helps support growth and development.
3 the damage from sleep deficiency can occur in an instant, or it can harm you over time. for example, ongoing sleep deficiency can raise your risk for some chronic health problems. it also can affect how well you think, react, work, learn, and get along with others.
healthy brain function and emotional well - being
4 sleep helps your brain work properly. while youre sleeping, your brain is preparing for the next day. its forming new pathways to help you learn and remember information.
5 studies show that a good nights sleep improves learning. whether youre learning math, how to play the piano, how to perfect your golf swing, or how to drive a car, sleep helps enhance your learning and problem - solving skills. sleep also helps you pay attention, make decisions, and be creative.
6 studies also show that sleep deficiency alters activity in some parts of the brain. if youre sleep deficient, you may have trouble making decisions, solving problems, controlling your emotions and behavior, and coping with change. sleep deficiency also has been linked to depression and risk - taking behavior.
7 children and teens who are sleep deficient may have problems getting along with others. they may feel angry and impulsive, have mood swings, feel sad or depressed, or lack motivation. they also may have problems paying attention, and they may get lower grades and feel stressed.
physical health
8 sleep plays an important role in your physical health. for example, sleep is involved in healing and repair of your heart and blood vessels. ongoing sleep deficiency is linked to an increased risk of heart disease, kidney disease, high blood pressure, diabetes, and stroke.
according to the passage, which statement is true?
not getting enough quality sleep per night will reverse all previous damage.
sleep losses are more dangerous to overall health than most serious diseases.
sleep plays an important role in physical health, and the amount of sleep one needs varies throughout life.
sleep losses have been linked to poor sports performances in children.

Explanation:

The first sentence of the passage states that sleep plays a vital role in good health and well - being throughout your life. It also mentions that sleep is involved in physical health, such as healing and repair of the heart and blood vessels. This supports the statement that sleep plays an important role in physical health and the amount of sleep one needs varies throughout life. The other options are not supported by the passage. There is no mention that not getting enough quality sleep per night will reverse all previous damage, that sleep losses are more dangerous than most serious diseases, or that sleep losses have been linked to poor sports performance in children.

Answer:

Sleep plays an important role in physical health, and the amount of sleep one needs varies throughout life.