20% of Americans between the ages of 18 to 29 have one of these, but 76% of people over the age of 65 have one. What is it?

20% of Americans between the ages of 18 to 29 have one of these, but 76% of people over the age of 65 have one. What is it?

20% of Americans between the ages of 18 to 29 have one of these, but 76% of people over the age of 65 have one. What is it?

Ans: A will.