During the early 20th century, why were many elderly people supported by their adult children?

 Taking a generalist approach, there are many factors why even in recent past many elder people were supported by adult children.

  In most countries in the early 20th century there was no retirement insurance plan provided by governments, and people couldn't afford to save money, as well; The first initiatives of retirement pension were started by private companies for their employees, who couldn't work as good as before (as a way to "get rid" of an employee that doesn't give profit); Later on, the people who could, paid banks for a private insurance plan (the people who were poor hardly have the chance to save any money).

 In the past,  life expectancy was lower and there were many impairing diseases much more prevalent, what impeded people who managed to get to old age to work.  

 This is some reasons why many elder people couldn't depend on themselves for a living.

the answer is b) ''i hereby express my profound remorse together with my sincere mourning ''.

the reason being that although all of the options provided are valid the main idea of the speech by prime minister junichiro koizumi is to express his and japan's current antiwar pledge.

he states that 59 years had passed since the war, he acknowledges the 3 million japanese that lost their lives during the war and those countries who were affected by their decisions, as well as the way japan intends to develop relationships across the globe however all of this can be summarize to how japan as a whole regrets the war and its consecuences.

hope this ! i found the article on let me know if i'm using the wrong one.