Improve the grammaticality of this sentence: However, what we do not know or are still confused about is the effective way to both take care of the aged and enhance the development of other fields.
The old man is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is the one who is
The elderly are not only the most important people in the family, but also the most important people in the family.
The elderly are the most important people in the family.
The elderly are the most important people in the family.
The elderly are the most important people in the family.
The elderly are the most important people in the family.
The elderly are the most important people in the family.
The elderly are the most important people in the family.
The elderly are the