Central idea is also known as main idea. Definition: The central idea (main idea) in a piece of writing is the point that the author wants you to remember most. Some writers may state the main idea, but it is often implied, which means the reader has to make inferences (what the text says + what I know) about it.
Answer:
D) Testing has shown that teenage boys between the ages of 15-18 sleep longer than teenage girls in the same age group.
Explanation:
The best way to revise this sentence is given in option D.
Option A lacks all necessary details, simply stating that males sleep longer than females. The research/testing, children's age, and the hours are not mentioned.
Option B feels like the second best, but a very important piece of information is missing - the specific age. Teenagers are children aged 13-19, and the difference between 13- and 19-year-olds is huge.
Option C also lacks information about the subjects' age.
Option D is also not ideal but feels the most complete. It doesn't mention how much longer exactly the boys sleep, but that detail isn't as important as the specific age is.
Transition words I believe
Their body releases a certain about of dopamine to the brain which cause the scare and some get serotonin from it which causes them to be happy
Answer:
volunteering helps counteract the effects of stress, anger, and anxiety. ...
Volunteering combats depression. ...
Volunteering makes you happy. ...
Volunteering increases self-confidence. ...
Volunteering provides a sense of purpose. ...
Volunteering helps you stay physically healthy.
Explanation: