Question

which friend is experiencing an internal barrier to physical fitness? mark lacks access to fitness equipment. tyler has trouble finding a safe area to work out. talia puts in only 50 percent of effort during her workout. clarks parents fail to support his desire to work out.

Explanation:

Internal barriers are personal - related. Talia's low - effort is an internal issue, while Mark's lack of equipment, Tyler's lack of a safe area, and Clark's lack of parental support are external factors.

Answer:

Talia puts in only 50 percent of effort during her workout.