In a senior writing seminar, students were asked to write a brief autobiography. sixty years later, if a researcher were to analyze these autobiographies, what would be the most likely outcome in terms of their longevity? more specifically, which group is likely to live an average of seven years longer?
a. those who had expressed narcissism in their autobiographies
b. those who had expressed anger and sorrow in their autobiographies
c. those who had expressed happiness and love in their autobiographies
d. we cannot predict longevity on the basis of emotions.

c. those who had expressed happiness and love in their autobiographies              

Explanation:

Autobiographies are written by oneself of the account on their own life. It is a self written biography.

Researcher suggested that people those who are happy and contend form their life is likely to live longer than those who always take stress and are unhappy in their life according to researcher Diener and Chan in 2011.  

It may be argued that good health and longevity is a result of happiness and satisfaction. Person those who loves others are in turn loved by others. These person feel happiness among themselves and this affect the life.

In 2008, Veenhoven suggested that happiness can protect against any illness  and thus helps to strengthen the immune system of our body.

A person lives longer when he is happy and is loved by others.

Thus the answer is ---

c. those who had expressed happiness and love in their autobiographies

explanation:

the answer is either c or d i think its d