Question

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

Answer 1

D. It informs the reader about Pluto's planetary status

Step-by-step explanation:

There are four main types of writing: descriptive, persuasive, narrative and expository.

The main purpose of expository (sometimes named informative) writing is, as the name might suggest, to explain, define something or inform the readers on a certain topic providing an explanation.

This particular sentence informs us about "Pluto's rise and fall from planethood" which means that it is no longer considered a planet.

In that way, it explains us Pluto's planetary status, which makes this an example of expository writing.