문제 내용: 다음 글의 요지로 가장 적절한 것은?
선택지 1: Seniors have been making contributions to the family.
선택지 2: Modern medicine has brought focus to the role of old folk.
선택지 3: Allocating resources well in a family determines its prosperity.
선택지 4: The extended family comes at a cost of limited resources.