Positive stress could: a
cause you to suffer burnout.
b
cause you to worry about minor stressors so they do not become larger.
c
help you resist fatigue and boredom.
d
interfere with school work.

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.