What is the main reason for the difficulty in breathing while mountaineering?

Correct option is C

The correct answer is Low air pressure.
Low air pressure at high altitudes:
· One's body might not get enough oxygen when engaged in mountain climbing at a high altitude.
· The air becomes drier and less oxygenated as the altitude rises.
· The pressure needs to be higher outside one's body for someone's lungs to be able to breathe in air without resistance.
· However, at high altitudes, their lungs have to work harder to draw in the thinner air.
· One's veins have to work harder to pump oxygen throughout the body.
· This is because the outside air pressure is lower than the inside air pressure.
Thus, the main reason for the difficulty in breathing while mountaineering is low air pressure.
Information Booster
Mountaineering:
· Mountain climbing, also known as mountaineering, is a sport.
· It involves reaching or making an effort to reach high points in mountainous terrain, primarily for enjoyment.
Additional Information
Some other problems of mountaineering:
Steep slope:
· Areas that have a slope greater than a specific percentage are considered steep slopes.
· If the slope is steeper, there may not be enough friction and slipping.
Extreme cold weather:
· Hypothermia and frostbite are two additional problems that can arise when mountaineering in extremely cold temperatures.
Icy wind:
· Mountains experience stronger, colder, and more unpredictable winds.
· Climbing is dangerous in winds of 60 to 70 mph because there is a high likelihood of being knocked over and getting hurt.