B, not sure if it's right.
Answer:
1a : the omission of one or more words that are obviously understood but that must be supplied to make a construction grammatically complete. b : a sudden leap from one topic to another.
2 : marks or a mark (such as … ) indicating an omission (as of words) or a pause.
The answer is B. when reading, it quickly becomes boring if every sentence was the same length. Nobody would want to read because they would quickly loose interest.
I sincerely hope this helped. :)