What the different between perceptions and perspectives

The primary agent of contact metamorphism is

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.

Which types of seismic waves travel through earths interior? select all that apply. a) l waves b) p waves c) s waves