Lesson 1)
1) a variety is an assortment of different things, you could say that a rainbow has a "variety" of colors.
2) an assemblage is just a gathering of different people.
3) conceptual art is basically when the concept behind the art is more important than the actual drawing, so if you see a picture of a dog, it could be a conceptual art if the drawing of the dog has a really good backstory behind how the artist got the dog.
4) Lithography doesn't necessarily have more variety than any other type of art, but it was a new printing technique that allowed for far greater variety in the use of color and line in mass-produced printing.
5) it is an example of outsider art.
Lesson 2)
1) The Trace Bitmap command attempts to automatically trace the edges of a bitmap image using several different techniques.
2) you would use Color Quantization
3) you need to use Unlink Clone command
4) Drop shadows are a visual effect that adds a shadow to an object. They give the illusion of depth and make an object look like it's popping out toward the viewer.
5) you have to use the Undo command (usually Ctrl z in most programs)
hope i got it to you in time.