Final answer:
The subject of this question is Social Studies, and the question is asking about the life satisfaction of older adults in various countries. The majority of adults in their sixties and seventies reported moderate life satisfaction.
Step-by-step explanation:
The subject of this question is Social Studies. The question is asking about the life satisfaction of adults in their sixties and seventies in a range of developed and developing countries. The survey revealed that a majority of adults in this age group reported moderate life satisfaction.