In a recent survey, the management of a local gym found that 80% of its members rated their satisfaction with the gym as 'excellent' or 'very good'. Furthermore, the survey indicated that gym members who frequented the gym more than three times a week were more likely to report higher satisfaction levels compared to those who attended less frequently.
Based on these findings, the gym management concludes that higher frequency of gym attendance directly contributes to increased member satisfaction.
Which of the following options, if true, would most strengthen the gym management's conclusion?