15. if a client's knees hurt after a one-week walking regimen, which one of the following suggestions is most appropriate?
a. switch to anaerobic exercise.
b. wear different shoes.
c. jog in a swimming pool.
d. take a week's rest from exercise.

the suggestion that is most appropriate is : C. jog in the swimming pool The injury is more likely to be caused by having to much stress in the knee regions. Jogging in a swimming pool will take away that stress because of the effect of water elevation and make the client still able to do some exercise

Answer d would be the best answer, for he wants to have part in biotechnology. an ekg technician is quite similar.