What error in parallelism is made in the following sentence?

All of the following quotes are examples of foreshadowing from the swimming contest except

Read the excerpt from the dark game: true spy stories from invisible ink to cia moles. yet, by the time robert e. lee surrendered to ulysses grant at appomattox, virginia, some four years later, about 620,000 soldiers had died on the battlefields, more than american battle deaths in all other wars from the revolution through the vietnam war. what is the author’s primary purpose for including this detail? to inform readers about the differences between three military conflicts to persuade readers of the seriousness of the american civil war to entertain readers with tales from behind the lines of battle to encourage readers to visit battlegrounds in appomattox, virginia

Emily is reading her friend's story. it uses transition words like and emily can tell that this story's organization is a) sequence of events b) cause and effect c) compare and contrast d) question and answer