Which of the following is a unit of density
a. cubic meters
b. square meters
c. leters per cubic gram
d. kilograms per cubic centimeter

D. kilograms per cubic centimeter

Explanation:

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 : )

the force on the thing and the distance the force moves the thing