Lynda is a 67 year old woman

. Lynda is a 67 year old woman. She is college educated, has 3 children, and has been married to the same man for 45 years. She has an optimistic view of herself and her life. Which of these factors is likely to do the most toward protecting her from the long term effects of serious health risks in old age?
Her college education
The fact that she had children
Her stable marriage
Her optimistic perspective