Exercising at high altitudes can give even the most-seasoned athlete pause. In general, the GREATEST effect of altitude on performance will be noticed:
Explanation
Answer: C - Typically, the ill-effects of altitude sickness maximize on Day 3. At high altitudes (>10,000 feet), the partial pressure of oxygen in the air is noticeably reduced. This means there is less pressure to drive oxygen into blood on its trip through the lungs. The end result is less oxygen in the muscles, brain and organs. Although it can take months to fully acclimate to a higher altitude, the body’s ability to cope improves after the first 3 days.
