Abalance uses small metal weights of known mass to determine the mass of a substance. where would a balance not function correctly?
a. in a vacuum on earth b. on the moon's surface c. on the earth's highest mountain d. in a zero gravity environment

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.