Greg built a new skateboard. After testing prototypes multiple times and collecting evidence, Greg advertises that his board can withstand 2000 newtons of force without breaking.
Which of the following ways of presenting this evidence would be the most useful for demonstrating that the device works as he says it does?
A.
by writing a list of the materials from which the prototype is built
B.
by showing photographs of different people riding the skateboard
C.
by showing graphs or charts that contain data from the design tests
D.
by writing an essay describing tricks he performed on the skateboard