Which of the following factors is not used to measure a country's standard of living?

Divorce rates is not used to measure a country's standard of living.

Option C

Explanation:

"Standard of living" is a measure of quality of life by the members of a geopolitical zone. Standard of living cannot be measured by non materialistic things such as relationship, freedom, satisfaction and relationships. Divorce is not a standard of living because its one of the factors of non materialistic things, its a state of freedom for man, it leads to satisfaction and it leads to divorce from a state of a relationship which both parties have decided to put an end to.