A tutor organized survey results for 173 ACT Math prep students during the percent-review online drill. Rows (discussion style): “explained answers to a partner”, “worked silently”. Columns (choice on the next task): “chose an extension problem”, “chose a review problem”. Counts: “explained answers to a partner” and “chose an extension problem” = 34; “explained answers to a partner” and “chose a review problem” = 42; “worked silently” and “chose an extension problem” = 52; “worked silently” and “chose a review problem” = 45. Which conclusion follows from the table without overstating the evidence?