Answer:
B- Are constantly replacing themselves,
The correct answer is <span>It
can leave dirt and allergens inside your nose, which your immune system
must remove by creating specific antibodies which can attack you
The nose hair found in your nose is used to prevent bad things from going in, and if you pick your nose, you're directly putting stuff inside and ignoring your natural protection against bad things such as viruses or bacteria.</span>
I think one thing you could do in order to measure your cardiovascular strength you can do a full sprint run. In order to help improve your fitness levels you can swim, jog/run, body weight exercises, and a balanced diet.
BE nice to your self
you do you
Remember that everyone makes mistakes
Focus on what you can change