This is the 9714th most frequent Korean word.
고령층에
"고령층에" means "to the elderly" or "to the senior population."
The term '고령층에게' is used here to refer to services that are directed towards the elderly population, showing the relation with specified actions or objects.
고령층에게 필요한 서비스는 무엇인가요?
What services are necessary for the elderly population?
'고령층의' here denotes possession or association, relating welfare improvements to the elderly group.
정부는 고령층의 복지를 개선하기 위해 노력하고 있습니다.
The government is striving to improve the welfare of the senior population.
In this sentence, '고령층에게는' emphasizes the subject for whom physical activity holds significant importance.