Which Client Should Have a Physician's Clearance Before Commencing or Continuing

Which client should have a Physician's Clearance before commencing or continuing any fitness program?

A) One who has ever had any type of surgical procedure
B) One who tells you they are nervous about an incident of shortness of breath that was once experienced
C) One with considerable health risks noted on preparticipation documentation
D) One who exhibits no signs and symptoms of any increased risk