Answer:
For pencils, lightly color in the areas you need it to be in first, mix the colors in between if you're doing an ombre, then go over It the same way pressing down harder. for paints it's a bit more difficult so I can't really help with that one.
B) Notre Dame emphasizes horizontal lines, while Amiens emphasizes vertical lines.
Just too the quiz(:
I would lean towards d, because a lot of the viking age art was made in tribute towards viking warriors, and viking warrior ships, etc..