Can someone help explain ellipses and their proper usage?

After reading this excerpt, darren makes a text-to-text connection. which example is a text-to-text connection?

In tim o'brien's chapter "good form," what does the narrator say is thehappening-truth? oa. that the man he killed was slim and daintyob. that he has never seen a dying person in his lifeoc. that he killed hundreds of men and remembers all their facesod. that he was afraid to look at the faces of the dead

Question 19 of 202 pointsread this passage: a longer school day might prove troublesome for the manystudents who need more time to complete all theirhomework and also participate in extracurricular activities.which word could best replace the word troublesome without changing theoverall meaning of the passage? o a. easyo b. challengingo c. hedeld. impossible