Traditionally, students at Kelly University have evaluated professors on the last day of class. But some professors at Kelly either do not distribute the paper evaluation forms or do so selectively, and many students cannot attend the last day of class. Soon, students will be able to use school computers to evaluate their professors at any time during the semester. Ttherefore, evaluations under the new system will accurately reflect the distribution of student opinion about teaching performance. Which one of the following is an assumption required by the argument? ['Professors who distribute the paper evaluation forms selectively distribute them only to students they personally like.', 'Dissatisfied students are in general not more likely than satisfied students to submit a computerized evaluation.', "Students can wisely and insightfully assess a professor's performance before the end of the semester.", 'Nearly all professors who fail to distribute the paper evaluation forms do so because they believe the students will evaluate them unfavorably.']