Both low temperature and high atmospheric pressure
Low temperature
Low atmospheric pressure
High atmospheric pressure
Show Solution
The Correct Option isC
Solution and Explanation
At high altitudes, atmospheric pressure is lower than at sea level. This decreases the partial pressure of oxygen, reducing oxygen delivery to the blood and tissues. Consequently, individuals at high altitudes have lower oxygen concentrations. Final Answer: \[\boxed{\text{The correct answer is (3), low atmospheric pressure.}}\]