Explanation:
Gravitational potential energy = mgh, where m is the mass of the mountain climber, g is the gravitational force and h is the height from the base.
Since m and g are constants, the climber's potential energy will be the lowest when he's at the end of the climb, at the base of the mountain. (B)
Have a lot of mitochondria so that more respiration providing muscles with more energy for muscle contraction
Hope it’s useful
If its a mutiple choice question ya got then VITAMINS should be the answer