Range of Motion is the measurement of movement around a specific joint or body part. Range of motion (ROM) exercises can help to improve flexibility as well. Making these exercises will increase the range of motion around a joint, referred to as flexibility. In order for a joint to have full range of motion, it must have good flexibility.
It depends on how fit/active they are but there is no set amount I would say at least 10
I don't think so but I'm not 100% sure
B is answer because ewe have glands that produce hormones in our body.
