What does topography mean?

If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.

Based on the information in the graph, what can you conclude about humans in the world in general?

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!