Making a piece of literature relevant means

a) including one’s relatives in the story
b) writing about a pachyderm
c) filling it with current language, setting, and important issues
d) using language, settings, and events that truly were used in earlier historical periods

D) using language, settings, and events that truly were used in earlier historical periods

Explanation:

In order to make a piece of literature relevant, you have to use universal themes and languages, settings and events that were used in earlier ages, if you observe the most relevant writters have always looked to the past to inspire themselves and try to emulate and upgrade those writtings from the past, like Shakespeare and the greek tragedies.

wordsworth tends to see nature as 'out there'; a presence which surrounds humans, and contributes to human life, but is different from humans. if you look at a typical wordsworth poem (there was a boy, ye knew him well ye rocks) - wordsworth talks about nature as something that needs to be learned about and understood, nature is different from us.  

if you look at a byron poem (the isles of greece is a good one) - byron looks at nature mainly for what it already means to man. wordsworth will look at a landscape and see the mountains, trees, valleys, and rivers as almost spiritual presences - wordsworth wants to get to know nature.  

byron will look at the same landscape and he will want to know who lives there, what are the villages? are there any farms or mines, is there some history?  

wordsworth looks at nature for what it is; byron is forever asking what it means.  

wordsworth thinks that humans are part of nature; byron thinks that nature is part of being human

mark twain, real name samuel langhorne clemens, was an american writer, humorist, entrepreneur, publisher, and lecturer. among his novels are the adventures of tom sawyer and its sequel, the adventures of huckleberry finn, the latter often called "the great american novel". wikipedia