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!
It would say that the technique that was discontinued during the swing era was Collective improvisation (option B) This might be because improvisation was connected to Jazz and Free Jazz music. Swing jazz is based on the off-beat or music pulse.
My freind he is very annoying lol