The writer is considering deleting the underlined portion of sentence 7 (reproduced below), adjusting the punctuation as needed.
Our brains are aroused each time our phones buzz because of the unpredictability of what pops up on the screen: since any alert might signal something extraordinary, dopamine is released each time even though most alerts don’t amount to much.
Should the writer keep or delete the underlined text?
Keep it, because it adds information that helps clarify the contrasting relationship identified in sentence 6 between anticipation and reward.
Keep it, because it adds information that helps clarify the contrasting relationship identified in sentence 6 between anticipation and reward.
A
Keep it, because it provides evidence suggesting that smartphones cause social impairments in individuals who use them.
Keep it, because it provides evidence suggesting that smartphones cause social impairments in individuals who use them.
B
Delete it, because it does not follow logically from sentence 7’s main point about how unpredictability affects arousal.
Delete it, because it does not follow logically from sentence 7’s main point about how unpredictability affects arousal.
C
Delete it, because it unnecess