Answer:
A senior citizen could be described as a reservoir of knowledge and experience because they have been alive the longest which would provide them with experience to know more or have seen more.
Explanation:
D, Japan is an Island, as rather than simply even walking to a different nation, they were isolated on a single island controlled only by themselves, having no one else to really contact that much until the Dutch came and eventually the Japanese started expanding into places like Korea.
... Guaranteed rights.
I hope this answer helps you by the way.