I think you demonstrate friction. Friction, I think.
The appropriate answer to this question is: A
Personal cost is the cost that will be levied on the person who is facing or causing a problem. So in the case that is provided in the above statement, the personal cost incurred by the man or woman suffering through flu is going to be his or her missed work because at the end of the day, he or she is responsible for covering the work missed.
I believe C. Hemophilia is one of the leading health conditions.
I would say hat now is the perfect time because peak bone mass happens at our age. Bone strengthening exercises are always good for your body no matter what, so encourage her/him to do it. I'm guessing the age is about 11-18 maybe...
Hope this helps... mark as Brainliest plz
I think the answer is REM sleep but look it up to be sure
