What main purpose does the line in this composition serve? lead the eye, provide movement, organize information

Suppose that you are in a room with 3 doors and a crack in the ceiling for light. that is all. the doors each have a sign on them that says what there is behind them. door #1. a pool of corrosive acid. door #2. a crocodile that hasn't eaten in 8 months. door #3. a solar "oven". a giant lens that focuses all the sunlight at the entrance of the door. you must choose a door, which door do you choose?

How did the scholars date the mosaic?

Northern renaissance artists focused on the? a. underlying musculature b. structure and perspective c. panels d. appearance of the subject answer!