You should never stretch more than this percentage above your ROM (range of motion). 10%
5%
25%
15%

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.

i would definitly say b : )