Which sentence uses dashes correctly?

a.
the plow piled snow at the end of—our driveway.

b.
the heavy snow—fell for hours and hours.

c.
the colors of fall are some of my mother's favorites—for example, orange and golden yellow.

d.
the answer will be the same: school work first—then a movie.

Returning from vietnam, we were indeed given a parade. crowds of screaming people waving signs — not just on one road, one day. no, they were everywhere. every day. on the streets, on the television, on the radio. a hot, angry tangle of shaking fists and ugly words that threatened us like a monster with a hundred heads. our country had chewed us up and spit us out, and now we were being treated as if it were our fault. what is one way the author's use of language contributes to the tone of this passage? a. the use of figurative language creates a feeling of resentment. b. the phrase "hot, angry tangle" is used sarcastically to create irony. c. the word "parade" is used sarcastically to create a lighthearted mood. d. the parallelism draws attention to the confusion of those returning.