Why did flemish painters use oil instead of the tempera paint favored by the italian renaissance painters?

What animal should i do for my clay project? give me some good worth 20 points!

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?

Which of these forms or genres appeared in the baroque period, but  not  previous periods?