Which of the following is an example of potential energy?
A. A pottery wheel spinning with the clay on it spinning too
B. A rubber band is stretched out
C. Two children running
D A train moving across the railroad track

b

explanation:

bc its just b

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )