Sentence Correction (SC) | The industry has seen a dramatic increase in the churn of cell phone a

“Because of” functions as a modifier of verbs. It can only be used to provide the reason behind a verb or an action.
Option E: increase in the churn of cell phoneaccounts because of customer willingness to act on new promotional offers to switch

“Caused by” functions as a modifier of nouns. It can only be used to provide the reason behind a noun and not
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