This is probably a joke but I'll answer anyway
By 'cheeks' they mean buttocks so by "making them clap" is referring to them being so big/thick that they clap or make noise when you walk or move around or something.
I probably got played lol but whatever
C. Pure Plastic Art
he manipulated plastic tiles to return art to a primitive state of moulded figures and simple shapes
Answer: A.found in Gothic Cathedrals in Western Europe
Explanation: