Answer:
Asia is the correct answer.
Explanation:
A major trend around the world is the twenty first century is that less children and more old people.To tackle the issue of increasing number of old people the government in various countries are trying to create a sustainable society so that no one is left behind. Ageing and fertility transition threaten the future of many Asian Nations,According to several estimates Asia could be home to more than 60 percent of the total population aged 65 years or older world wide.
