Range of motion (ROM) is a measurement of movement around a joint.
Age does NOT limit range of motion. Correct answer: B Having a full range of motion, means that the joint has good flexibility.Each joint has its own level of flexibility, expressed in degrees. Joint articulation, muscle or fat mass, body asymmetry, injury and disease are all factors that influence ROM.
What doesn't limit the range of motion from the things which you've mentioned would be age. Age per person doesn't really limit the range of motion - while there are factors which negatively influence our range of motion and which are strongly correlated with age, it is hard to say that age itself would be the cause of a limited range of motion.