An executive coach started working with employees at Agency X one month ago, and since then, Agency X's employees have drafted 50% more reports. It is clear that the coaching has helped Agency X's employees write more reports. Which of the following statements, if true, would most strengthen the above argument? radio_button_unchecked Since Agency X hired the executive coach, the reports its employees have had to write are less complex than they were previously. radio_button_unchecked Agency X has hired many new employees in the last month. radio_button_unchecked Agency X has renewed the executive coach's contract for another year. radio_button_unchecked Agency Z hired this executive coach last year and also saw a significant increase in the number of reports written. radio_button_unchecked The employees at Agency X have had less work to do in the last month than usual