The correct answer should be they have both literal and figurative meaning
It is always unknown what things might really mean in poems or what they represent. This is why it is ambiguous as you cannot know whether the poet meant it literally or figuratively.
Children
Based on the context of the passage above, the meaning of
treasure is “children.” This is so because
the author seems to communicate the value he has, and recommends all do, for
the future. Because a society has no
future if it has no children who will one day be adults; a society would be
doomed to extinction, and there would be no future, if there we no
children. Thus, a society’s greatest
treasure should be its children—children, of course, guarantee there will be a
society at all in the future.
When large numbers of voters are involved in the choice of representatives it is better for the republic hope this helps