A musculoskeletal disease is a disease of the muscles, bones, or blank that produces body
dysfunction with a recognizable set of signs and symptoms that often have a well-understood cause.

take a break move to stretching and slowly work back into physically exercising if the problem continues go to a doctor or physical therapist

absolute strength refers to the maximum force exerted by a body irrespective of body size. relative strength on the other hand is the force exerted by a body in relation to muscle size or body weight.

so the answer is: c. absolute strength measures strength regardless of your body size, while relative strength measures strength adjusted for your weight.