Answer
See the figures below.
Work Step by Step
The author here asks for drawing 3 sketches:
a) The interaction diagram.
b) The system. [The system here is the mountain climber plus the rope plus the bag of supplies, as you see in the figure below.]
c) The force diagram.
You can see all of these sketches below.
The wire has a mass which means that it will not be perfectly parallel to the inclined since it will have a curve toward the Earth due to its weight. You can imagine a metal chain to have the full image.
