The leading cause of death between ages 25 and 44 is
A. heart disease.
B. malignant neoplasms (cancer).
C. unintentional injury.
D. chronic low-respiratory disease.
4 answers
http://longevity.about.com/od/longevity101/tp/mortalitymid.htm
That same site has the answer to question 2 in a link.
what is question 2
the deaths from heart, cancer and stroke, but they add to 50% which is not on your list of answers.