The correct answer is B) one out of three.
One out of three Americans believes that "if you work hard enough, you'll make it."
There is nothing wrong with working hards. The problem is the excess of work without balance. That creates a lot of health problems and other types of problems at home. No time for the husband/wife, no quality time with the children, less time for entertaining, and so on. So it is very important to have a balance in life because too much money without good health or not having a special person to share those good moments, is not a good life.
The other options of the question were A) one out of two. C) one out of four. D) one out of five.