I mean I can not confirm nor deny that
It depends on what you are talking about when you say "create the look".
Most likely, the answer you are looking for is the Director, because the Director will give input to the costume designer on the character's look and how it fits into the overall design elements of the entire production.
If, on the other hand, the question is asking about who assists in building the costumes, then the answer is the Wardrobe assistant.
Again, it all boils down to if "create" means design or construction. In context, my best guess is it's referring to design, in which case the answer is the Director.
Just left to my own devices, I would have picked Stretch and/or Squash. The next closest thing (out of those three) is exaggeration. When you read the description of exaggeration, you find that physical characteristics can be exaggerated, but they should resemble some form of reality.
The second one is really a very close call. You could make a case for either secondary action, or follow through. The only one you could eliminate is pose to pose. That is reserved for how the action goes from one pose to another. That is more of a problem in technique than overall plotting. I think I'd pick follow through, because the character has stopped bouncing the ball, but he likely hasn't stopped sweating nor looking at his watch.
Pretty interesting question. You are not going to get asked that every day.
The synonym term for the pre-classical period of music is rococo.
Hope this helps you~!