The graph represents the heights of two climbers on a climbing wall over a 12-minute time period. a graph where the horizontal axis shows time (minutes), numbered 1 to 12, and the vertical axis shows height (feet) numbered 2 to 24. the line labeled brynn's climb begins at 0 feet in 0 minutes, to 15 feet from 5 to 7 minutes, to 0 feet in 10 minutes. the line labeled abby's climb begins at 4 feet in 0 minutes, to 14 feet from 4 to 6 minutes, to 22 feet in 8 minutes, to 0 feet in 12 minutes. [note: character count is 395] how high did abby climb above their original starting position? 8 feet 15 feet 18 feet 22 feet