A rock climber checks his rope before holding on to the next spot on the rock .
It is probably the case that a rock climber is trying to make his way up a mountain , checking his rope with every step .
It is probably the case that a rock climber is trying to make his way up a mountain , checking his rope with every step .
Chances are slight that a rock climber is trying to make his way up a mountain , checking his rope with every step .
A rock climber is trying to make his way up a mountain , checking his rope with every step .