One advantage to buying a CD is that it -can be purchased for different amounts.
-is high risk but comes with great rewards.
-can be used for long-term retirement.
-is high risk but backed by the government.

In a study, people were asked to imagine simple occasions that made them happy and to remember events that made them feel proud about themselves. it was observed that the subjects developed an increasingly positive attitude. these changes are known to be healthy, leading to greater physical activity and reducing unhealthy habits. based on this excerpt, we can conclude that a positive attitude .