Answer:
dialogue can reveal: A character's thoughts and feelings through his or her tone of voice and the way the words are spoken.
Explanation:
Dialogue, or a conversation between two or more people, can tell the reader a lot about characters' personalities. And, as readers, we want to be able to understand the characters because we're investing our time in getting to know them, whether we're taking the time to read a short story, a novel, or a script. Powerful dialogue can reveal:
A character's thoughts and feelings through his or her tone of voice and the way the words are spoken
How a character interacts with others based on his or her responses and how much or how often he or she speaks
What a character's motives or desires are based on what he or she says or avoids saying
A character's background through his or her accent, use of slang, or mention of places or experiences
A character's thoughts and feelings and how he or she interacts with others can be shown in various ways. Let's say there's an impatient boy who hates when his sister takes a long time getting ready for school because it often leads to him being late. We can understand all of that just by having him say, 'You're seriously going to curl your hair right now?' He rolled his eyes and walked away. 'So much for making it to the bus,' he grumbled.
We're able to pick up on his impatience by what he says and by the way he says it. We can sense his annoyed tone of voice, and we can see that he grumbles as he walks away from his sister, which shows how he interacts with her. He doesn't directly tell her that he thinks they will miss the bus because she has decided to take the time to curl her hair, but he hints at it by what he says to her and then walks away to express more of what he's thinking to himself. All of this reveals his character.