Why does range of motion need to be measured separately for each joint? a. the average ranges of motion of joints are not known. b. each joint has a different range of motion. c. range of motion can change rapidly in a joint. d. none of the above

B.) Each joint has a different range of motion.

Im not completely sure but I think its B

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Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases.