The advertisement tells that People can make a difference in countless ways.
Explanation:
This advertisement "The Opportunity of a Lifetime" and answer the question. states that people can the lives of the themselves and other people in different ways. If they want to do change something, they can definitely with their efforts.
Advertisements always use some tag lines to present or show their idea or motive behind the advertisement. Advertisements are the methods to present a piece of information in a more attractive and presenting way.
The claim that is supported by evidence in the form of examples is People can make a difference in countless ways.
Explanation:
This advertisement uses the sentences "Teach English and play with children in local orphanages", "Help injured sea turtles and feed abandoned baby elephants", "Help build a school or dig wells for clean water…" as examples of the different things volunteers can do to help the people in need that is mention in the statistics.