Expository writing, such a scientific essay, serves what two purposes?

Read the passage. and thus they fought all the long day, and never stinted till the noble knights were laid to the cold earth. and ever they fought still till it was near night, and by then was there a hundred thousand laid dead upon the down. in the passage from morte d’arthur by sir thomas malory, what are the bolded words an example of?

Chapters 3–5 while reading, think about… author’s purpose/point of view symbolism communication between characters —ethan frome

Based on this excerpt the authors are mostly likely to attempt to answer which question?