Why did Okinawans create karate

They created it to help protect themselves from bandits and invading armies. There is debate as to whether the arts were developed by the rich, who had the time, or the peasants, who worked long hours.

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.