Following a unit on running, a physical education teacher assesses students' participation based on their target heart rate. Ben, a student with cerebral palsy who uses a cane, has an impaired ability to achieve a target heart rate while running. Which of the following modifications is most appropriate for the teacher to use to assess Ben's participation?
1) Assessing Ben's running gait by determining whether he applies the correct pressure on his feet
2) Using a pedometer instead of a heart rate monitor to determine whether Ben walks a predetermined number of steps
3) Administering to Ben a written paper-and-pencil test about proper running form
4) Allowing Ben to record his peers' target heart rates after completion of the activity