The answer is number 4) These numbers show that teenagers care about others.
Sentences 1-3 show evidence to support the main argument, which is that teenagers help others. Sentence 1 gives an individual example, and on sentences 2 and 3, it presents statistical data.
The fastest speed of an Acela train is 150 miles per hour
To reach 1050 miles, acela trains need :
1050 / 150 = 7 hours
Hope this helps
