Answer:The Correct answer is "O"
Explanation:
By measuring a person’s height and weight, an estimate of a person’s body shape can be made, and could be done with on your own.
But, when measuring fat with skin folds it is to be more accurate due to the reason that you need a trained practitioner with the appropriate calipers.
C. loud noise or music because infection and injury do not occur often and aging wouldn't make any sense.