The best answer would be the third option. Extended joints is a possible result of low levels of activity caused by being overweight. Being overweight, adds more pressure on your body parts which could lead to diseases that involve the joints. The most common is arthritis. More weight means more pressure on our joints especially on the lower part of the body.
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The five responsibilities are communicating to the patient who you are, what your job is, what procedure you will be doing, the time it will take for the results, and what they can do until the results.