Question

What does a reader learn about a story by it's tone?

A. The time and place in which a story occurs
B. The story's overall mood
C. The event that occur in a story
D. The character who tells a story

Answer 1

B, the overall mood.
The tone of a story is how the author shows the general attitude in the story. So if the story seems sad through the words, you can assume the rest of the story will be as well.
Think of it as a horror movie. Weird or scary things happen in the beginning, and that general tone/theme will continue throughout.

Answer 2

B. The overall mood would be correct