Text-based stimulus: A line graph titled 'Tutoring Website Visits' with x-axis Week 1, Week 2, Week 3, Week 4 and y-axis Visits from 980 to 1140 with 20-unit ticks. Points: 1000, 1040, 1080, 1120. It also includes headline 'Tutoring visits surged.'. A line chart shows visits to a tutoring website from Week 1 to Week 4: 1,000, 1,040, 1,080, 1,120. The y-axis begins at 980, and the headline says 'Tutoring visits surged.' What feature most seriously distorts the interpretation?