The writer is considering deleting sentence 13 (reproduced below). The potential benefits of monitoring sleep patterns using a fitness tracker, however, outweigh the negatives.
Should the writer keep or delete this sentence?

A. Keep it, because it gives the writer authority by demonstrating a clear understanding of the benefits of using fitness trackers.

B. Keep it, because it provides logical support for the claim made in sentence 2 that lack of sleep causes serious health and business issues.

C. Keep it, because it offers a contrasting position that helps rebut the counterargument presented in the third paragraph.
Delete it, because it does not provide a logical transition from the information in the third paragraph to the information in the fourth paragraph
D. Delete it, because it contradicts the information in sentence 12 about the cost of fitness trackers and the fact that many people cannot afford them.