medium · GMAT Verbal
A regional bank observed that customers who use its mobile app have 40% higher savings balances than those who only use physical branches. The bank's management concluded that the app's convenient tracking features encourage customers to save more money.
Which of the following, if true, most weakens the management's conclusion?
- Customers who use only physical branches tend to make fewer but larger individual deposits than app users do.
- Surveys show that customers who use the app are highly satisfied with the bank's customer service.
- The bank's mobile app is primarily used by younger, tech-savvy professionals who generally have higher incomes and higher savings rates.
- The bank recently updated its mobile app to include a feature that allows users to deposit checks remotely.
- Physical branch usage has declined by 15% since the mobile app was launched three years ago.
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