The question being tested is whether or not the human body will produce more red blood cells at higher altitudes.
The hypothesis an athlete would create from this question is that the body will produce more red blood cells at a higher altitude to ensure the pumping of oxygen throughout the body.
One skill could be to not<span> rush it—make time for face-to-face contact.</span>
Answer:
my answer would be the 3rd one about blocking it.
When competition for resources is unnecessary
