Dr. Esposito researches the effects of different types of brain damage on physiological and psychological functions. He works with non-human animals, and causes small localized areas of
brain damage, called to study which resulting impairments occur.

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.