"Teenagers who are tired are often tardy or fall asleep in class." is the answer.
Answer:
I mean, that is not a bad source but it is not updated. There are many sites you can search upon, such as the Wall Street Journal. 1. they are the most updated. 2. Well known 3. Fact Checked 4. Most trusted.
Explanation:
Here is the link
https://www.wsj.com/articles/earthquake-sparks-japan-tsunami-warning-11560866623