1point
what does the tone of a story tell the reader
a. the overall mood created in a story
b. what happens to the characters during a story
c. who tells a story
d. where a story takes place

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. 

are there answer choices to this particular question?

in my opinion, ap calculus was the most difficult. i often struggled with it a lot. however, i have gotten a lot better.