Read this sentence from Neil deGrasse Tyson's preface to his book The Pluto Files:

Gathered here in one place is a record of Pluto's rise and fall from planethood, given by way of media accounts, public forums, cartoons, and letters I received from disgruntled schoolchildren, their teachers, strongly opinionated adults, and colleagues.
Why would this be considered an example of expository writing?
A. It argues that Pluto should not be considered a planet.
B. It fictionalizes the story of Pluto's history.
C. It gives an opinion of Tyson's book about Pluto.
D. It informs the reader about Pluto's planetary status

Titinius.] why didst thou send me forth, brave cassius? did i not meet thy friends, and did not they put on my brows this wreath of victory, and bid me give it thee? didst thou not hear their shouts? alas, thou hast misconstrued everything! but hold thee, take this garland on thy brow. thy brutus bid me give it thee, and i will do his bidding. brutus, come apace, and see how i regarded caius cassius. by your leave, gods,—this is a roman’s part: come, cassius’ sword, and find titinius’ heart. which theme is best expressed by the text evidence in the excerpt? a. power corrupts those who achieve it. b victory has a high cost for both sides of a conflict. c. loyalty to one's superior is more important than life. d.people in power cannot recognize success.