I believe the answer is...
A) You need to build up the clay so it is furthest from the base.
My deepest apologies if this is wrong!!
Have a nice day/night!
Answer: A: the corner of a room
Explanation: because i just looked at the picture and researched how he mad it move and yeah the corner of the room
The correct answer is texture
Frescoes are in fact affected moisture. They need to stay dry, and humidity needs to be low.