2D design is flat design, like drawing or sketching.
http://resources.hwb.wales.gov.uk/VTC/ngfl/dandt/75/Tutorials/2D%20Design/Section1.pdf
use this pdf to learn how to use it
I would say D.that moment where the ball is about to hit the bat
It is the brass because it is in the brass family with the instrument ls included during the explanation
Thanks for the points :))