Coach DeCaro records the cross country runners’ times compared to their personal best times.3K TimesRunnerTime compared to personal bestGregor+5.6Hiroki–11.6Isabelle+3.2Juan0Karen–5.2Which list correctly orders the runners from MOST improved to LEAST improved?

A negative time difference means a runner was faster than their personal best, so a more negative number indicates greater improvement. Hiroki improved by 11.6, followed by Karen at 5.2; Juan matched his personal best. Isabelle and Gregor were slower than their best times, with Gregor farther behind. The order is Hiroki, Karen, Juan, Isabelle, Gregor, which is choice C.

AI-written and checked against the verified answer.