The answer would be pubic hair. Because, secondary sexual characteristics.
Visible secondary sex characteristics are nonreporductive sexual characteristics.
For males things that will start to show are pubic hair, facial hair, and Adam's apple.
Explanation:
I will ask the parents why don't they want their son to know about his illness. If the parents are concerned about how he'll react or even his after-math (although he is already sick). If it about his maturity, before you tell him
you should consult with my hospital's ethic/legal counsel before you do, just to decrease personal liability.
Does it make sense?
Bacteria,viruses,fungi,and protozoa
Bacteria can be helpful
A noncommunicatable disease is a disease that cannot be transmitted. so hypertension