T. This is true because research is vital when it comes to diseases, infections, and other sicknesses. If the bacteria/viruses are strong enough and the treatments aren’t, they can become resistant to them. With research, we can develop a stronger treatment that will not be resisted by any bacteria/virus
Memory loss is not part of physical change by aging
The ansewer is d. I don't really wanna explain it but I need more letters to post answer :)
Patients of hospitals with a high index of suspicion, and Healthcare providers that utilize needles ( primarily because blood from either can get into the wounds of one another).
Additionally I think servicemen are obligated to have one done on them. Additionally those who wish to donate blood are required to have a negative blood test.