Which statement is true of dialogue in short stories? A. Dialogue is used to summarize what characters say and to help the story move along more quickly. B. A short-story writer should look for opportunities to tell what a character is like rather than show it, by eliminating as much dialogue as possible. C. Dialogue is one way to show, rather than tell, readers what a character is like. D. Because dialogue takes up a lot of space, it should be avoided in short stories.

I'm pretty sure it's C. Dialogue using the character’s own words is one way a writer can show rather than tell readers what a character is like.

Explanation:

In short stories, there is an obvious need to be as concise as possible.  One way to save space is through indirect characterization—where readers are able to discern the characteristics of characters through what characters say and do without the need for the author to blatantly state so. This indirect characterization can be considered getting “two birds with one stone,” so to speak, which is why indirect characterization is prominent in so many short stories.  

ich statement best shows a problem in travels with charley?

one sharp difficulty presented itself. in the intervening twenty-five years my name had become reasonably well known.

this being so, my trip demanded that i leave my name and my identity at home.

i had to go alone and i had to be self-contained, a kind of casual turtle carrying his house on his back.

with all this in mind i wrote to the head office of a great corporation which manufactures trucks.